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securities.","units":{"USD":[{"start":"2008-01-01","end":"2008-12-31","val":2186000,"accn":"0000950123-11-020617","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2008"},{"start":"2009-01-01","end":"2009-06-30","val":4104000,"accn":"0000950123-10-074964","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09"},{"start":"2009-04-01","end":"2009-06-30","val":2342000,"accn":"0000950123-10-074964","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09","frame":"CY2009Q2"},{"start":"2009-01-01","end":"2009-09-30","val":27458000,"accn":"0000950123-10-103108","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09"},{"start":"2009-07-01","end":"2009-09-30","val":23354000,"accn":"0000950123-10-103108","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09","frame":"CY2009Q3"},{"start":"2008-12-31","end":"2009-12-31","val":36467000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2009"},{"start":"2009-01-01","end":"2009-12-31","val":31467000,"accn":"0000950123-11-020617","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01"},{"start":"2010-01-01","end":"2010-03-31","val":6232000,"accn":"0000950123-11-048221","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-10","frame":"CY2010Q1"},{"start":"2010-01-01","end":"2010-06-30","val":33834000,"accn":"0000950123-10-074964","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09"},{"start":"2010-01-01","end":"2010-06-30","val":42069000,"accn":"0000950123-11-083001","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-09-07"},{"start":"2010-04-01","end":"2010-06-30","val":27602000,"accn":"0000950123-10-074964","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09"},{"start":"2010-04-01","end":"2010-06-30","val":35837000,"accn":"0000950123-11-083001","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-09-07","frame":"CY2010Q2"},{"start":"2010-01-01","end":"2010-09-30","val":35750000,"accn":"0000950123-10-103108","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09"},{"start":"2010-01-01","end":"2010-09-30","val":43985000,"accn":"0000950123-11-096978","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"start":"2010-07-01","end":"2010-09-30","val":1916000,"accn":"0000950123-10-103108","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09"},{"start":"2010-07-01","end":"2010-09-30","val":1916000,"accn":"0000950123-11-096978","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09","frame":"CY2010Q3"},{"start":"2009-12-31","end":"2010-12-31","val":49890000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2010"},{"start":"2010-01-01","end":"2010-12-31","val":41655000,"accn":"0000950123-11-020617","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01"},{"start":"2010-01-01","end":"2010-12-31","val":49890000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25"},{"start":"2011-01-01","end":"2011-03-31","val":6176000,"accn":"0000950123-11-048221","fy":2011,"fp":"Q1","form":"10-Q","filed":"2011-05-10"},{"start":"2011-01-01","end":"2011-03-31","val":6176000,"accn":"0001193125-12-224783","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2011Q1"},{"start":"2011-01-01","end":"2011-06-30","val":83004000,"accn":"0000950123-11-083001","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-09-07"},{"start":"2011-01-01","end":"2011-06-30","val":83004000,"accn":"0001193125-12-347565","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2011-04-01","end":"2011-06-30","val":76828000,"accn":"0000950123-11-083001","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-09-07"},{"start":"2011-04-01","end":"2011-06-30","val":76828000,"accn":"0001193125-12-347565","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09","frame":"CY2011Q2"},{"start":"2011-01-01","end":"2011-09-30","val":92012000,"accn":"0000950123-11-096978","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"start":"2011-01-01","end":"2011-09-30","val":92012000,"accn":"0001051741-12-000017","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2011-07-01","end":"2011-09-30","val":9008000,"accn":"0000950123-11-096978","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"start":"2011-07-01","end":"2011-09-30","val":9008000,"accn":"0001051741-12-000017","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08","frame":"CY2011Q3"},{"start":"2010-12-31","end":"2011-12-31","val":98161000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011"},{"start":"2011-01-01","end":"2011-12-31","val":98161000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25"},{"start":"2011-01-01","end":"2011-12-31","val":98000000,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2012-01-01","end":"2012-03-31","val":12970000,"accn":"0001193125-12-224783","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10"},{"start":"2012-01-01","end":"2012-03-31","val":12970000,"accn":"0001051741-13-000044","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-07","frame":"CY2012Q1"},{"start":"2011-12-30","end":"2012-06-30","val":144430000,"accn":"0001051741-13-000066","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"start":"2012-01-01","end":"2012-06-30","val":144430000,"accn":"0001193125-12-347565","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2012-03-31","end":"2012-06-30","val":131460000,"accn":"0001051741-13-000066","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09","frame":"CY2012Q2"},{"start":"2012-04-01","end":"2012-06-30","val":131460000,"accn":"0001193125-12-347565","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-09"},{"start":"2011-12-31","end":"2012-09-30","val":173834000,"accn":"0001051741-13-000075","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-07"},{"start":"2012-01-01","end":"2012-09-30","val":173834000,"accn":"0001051741-12-000017","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":29404000,"accn":"0001051741-12-000017","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-08"},{"start":"2012-07-01","end":"2012-09-30","val":29404000,"accn":"0001051741-13-000075","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-07","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":177512000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25"},{"start":"2012-01-01","end":"2012-12-31","val":178000000,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2012-01-01","end":"2012-12-31","val":178000000,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":0,"accn":"0001051741-13-000044","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-07","frame":"CY2013Q1"},{"start":"2012-12-29","end":"2013-06-30","val":0,"accn":"0001051741-13-000066","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09"},{"start":"2013-03-31","end":"2013-06-30","val":0,"accn":"0001051741-13-000066","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-09","frame":"CY2013Q2"},{"start":"2012-12-30","end":"2013-09-30","val":0,"accn":"0001051741-13-000075","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-07"},{"start":"2013-07-01","end":"2013-09-30","val":0,"accn":"0001051741-13-000075","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-07","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":0,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25"},{"start":"2013-01-01","end":"2013-12-31","val":0,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17"},{"start":"2013-01-01","end":"2013-12-31","val":0,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":0,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17"},{"start":"2014-01-01","end":"2014-12-31","val":0,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2014"},{"start":"2015-01-01","end":"2015-03-31","val":0,"accn":"0001051741-16-000314","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-12-31","val":14000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2015"},{"start":"2016-01-01","end":"2016-03-31","val":13000000,"accn":"0001051741-16-000314","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29","frame":"CY2016Q1"}]}},"CapitalLeaseObligationsIncurred":{"label":"Lease Obligation Incurred","description":"Amount of increase in lease obligation from new lease.","units":{"USD":[{"start":"2009-01-01","end":"2009-06-30","val":11928000,"accn":"0000950123-10-074964","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-09"},{"start":"2009-01-01","end":"2009-09-30","val":11928000,"accn":"0000950123-10-103108","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-09"},{"start":"2009-01-01","end":"2009-12-31","val":11928000,"accn":"0000950123-11-020617","fy":2010,"fp":"FY","form":"10-K","filed":"2011-03-01","frame":"CY2009"}]}},"CapitalLeasesFutureMinimumPaymentsDueCurrent":{"label":"Capital Leases, Future Minimum Payments Due, Next Twelve Months","description":"Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2011-12-31","val":1900000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":2100000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2012Q4I"},{"end":"2013-12-31","val":3000000,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25","frame":"CY2013Q4I"},{"end":"2014-12-31","val":3000000,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17","frame":"CY2014Q4I"},{"end":"2015-12-31","val":3000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2015Q4I"}]}},"CapitalLeasesFutureMinimumPaymentsDueInFiveYears":{"label":"Capital Leases, Future Minimum Payments Due in Five Years","description":"Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2011-12-31","val":2600000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":2500000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2012Q4I"},{"end":"2013-12-31","val":3000000,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25","frame":"CY2013Q4I"},{"end":"2014-12-31","val":3000000,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17","frame":"CY2014Q4I"},{"end":"2015-12-31","val":3000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2015Q4I"}]}},"CapitalLeasesFutureMinimumPaymentsDueInFourYears":{"label":"Capital Leases, Future Minimum Payments Due in Four Years","description":"Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2011-12-31","val":2600000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":2500000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2012Q4I"},{"end":"2013-12-31","val":3000000,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25","frame":"CY2013Q4I"},{"end":"2014-12-31","val":3000000,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17","frame":"CY2014Q4I"},{"end":"2015-12-31","val":3000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2015Q4I"}]}},"CapitalLeasesFutureMinimumPaymentsDueInThreeYears":{"label":"Capital Leases, Future Minimum Payments Due in Three Years","description":"Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2011-12-31","val":2600000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":2500000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2012Q4I"},{"end":"2013-12-31","val":3000000,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25","frame":"CY2013Q4I"},{"end":"2014-12-31","val":3000000,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17","frame":"CY2014Q4I"},{"end":"2015-12-31","val":3000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2015Q4I"}]}},"CapitalLeasesFutureMinimumPaymentsDueInTwoYears":{"label":"Capital Leases, Future Minimum Payments Due in Two Years","description":"Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2011-12-31","val":2200000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":2500000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2012Q4I"},{"end":"2013-12-31","val":3000000,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25","frame":"CY2013Q4I"},{"end":"2014-12-31","val":3000000,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17","frame":"CY2014Q4I"},{"end":"2015-12-31","val":3000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2015Q4I"}]}},"CapitalLeasesFutureMinimumPaymentsDueThereafter":{"label":"Capital Leases, Future Minimum Payments Due Thereafter","description":"Amount of minimum lease payments for capital leases due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2011-12-31","val":24000000,"accn":"0000950123-12-003688","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":20300000,"accn":"0001051741-13-000014","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-25","frame":"CY2012Q4I"},{"end":"2013-12-31","val":19000000,"accn":"0001051741-14-000014","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-25","frame":"CY2013Q4I"},{"end":"2014-12-31","val":16000000,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17","frame":"CY2014Q4I"},{"end":"2015-12-31","val":13000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2015Q4I"}]}},"CashAndCashEquivalentsAtCarryingValue":{"label":"Cash and Cash Equivalents, at Carrying Value","description":"Amount of currency on hand as well as demand deposits with banks or financial institutions. 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:"2014-12-31","val":27781000000,"accn":"0001051741-15-000035","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-17"},{"end":"2014-12-31","val":27781000000,"accn":"0001051741-15-000130","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-04"},{"end":"2014-12-31","val":27781000000,"accn":"0001051741-15-000165","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-31"},{"end":"2014-12-31","val":27781000000,"accn":"0001051741-15-000178","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-10-26"},{"end":"2014-12-31","val":27781000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2014Q4I"},{"end":"2015-03-31","val":28250000000,"accn":"0001051741-15-000130","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-04","frame":"CY2015Q1I"},{"end":"2015-06-30","val":28447000000,"accn":"0001051741-15-000165","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-31","frame":"CY2015Q2I"},{"end":"2015-09-30","val":28816000000,"accn":"0001051741-15-000178","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-10-26","frame":"CY2015Q3I"},{"end":"2015-12-31","val":28701000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10"},{"end":"2015-12-31","val":28701000000,"accn":"0001051741-16-000314","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29","frame":"CY2015Q4I"},{"end":"2016-03-31","val":29561000000,"accn":"0001051741-16-000314","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29","frame":"CY2016Q1I"}]}},"DepositsMoneyMarketDeposits":{"label":"Deposits, 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Savings Deposits","description":"Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts 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Y","form":"10-K","filed":"2015-03-17"},{"end":"2014-12-31","val":234000000,"accn":"0001051741-15-000130","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-04"},{"end":"2014-12-31","val":234000000,"accn":"0001051741-15-000165","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-31"},{"end":"2014-12-31","val":234000000,"accn":"0001051741-15-000178","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-10-26"},{"end":"2014-12-31","val":234000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10","frame":"CY2014Q4I"},{"end":"2015-03-31","val":231000000,"accn":"0001051741-15-000130","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-04","frame":"CY2015Q1I"},{"end":"2015-06-30","val":236000000,"accn":"0001051741-15-000165","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-07-31","frame":"CY2015Q2I"},{"end":"2015-09-30","val":239000000,"accn":"0001051741-15-000178","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-10-26","frame":"CY2015Q3I"},{"end":"2015-12-31","val":242000000,"accn":"0001051741-16-000251","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-10"},{"end":"2015-12-31","val":242000000,"accn":"0001051741-16-000314","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29","frame":"CY2015Q4I"},{"end":"2016-03-31","val":253000000,"accn":"0001051741-16-000314","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-04-29","frame":"CY2016Q1I"}]}},"LoansAndLeasesReceivableCommercialNetOfDeferredIncome":{"label":"Loans 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origination (if held for part of the 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of Reportable Segments","description":"Number of segments reported by the entity. 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While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its 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Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share 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