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stock.","units":{"USD":[{"end":"2010-12-31","val":2134000,"accn":"0000950123-11-097619","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10"},{"end":"2010-12-31","val":2134000,"accn":"0001193125-12-101462","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-07","frame":"CY2010Q4I"},{"end":"2011-09-30","val":127339000,"accn":"0000950123-11-097619","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10","frame":"CY2011Q3I"},{"end":"2011-12-31","val":127807000,"accn":"0001193125-12-101462","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-07"},{"end":"2011-12-31","val":127807000,"accn":"0001193125-12-208593","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-03"},{"end":"2011-12-31","val":127807000,"accn":"0001193125-12-335039","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03"},{"end":"2011-12-31","val":127807000,"accn":"0001193125-12-444146","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31"},{"end":"2011-12-31","val":127807000,"accn":"0001193125-13-094067","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06","frame":"CY2011Q4I"},{"end":"2012-03-31","val":129200000,"accn":"0001193125-12-208593","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-03","frame":"CY2012Q1I"},{"end":"2012-06-30","val":130495000,"accn":"0001193125-12-335039","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03","frame":"CY2012Q2I"},{"end":"2012-09-30","val":131563000,"accn":"0001193125-12-444146","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31","frame":"CY2012Q3I"},{"end":"2012-12-31","val":133059000,"accn":"0001193125-13-094067","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06"},{"end":"2012-12-31","val":133059000,"accn":"0001193125-13-204649","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-07"},{"end":"2012-12-31","val":133059000,"accn":"0001193125-13-315353","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-02"},{"end":"2012-12-31","val":133059000,"accn":"0001193125-13-427793","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-05"},{"end":"2012-12-31","val":133059000,"accn":"0001193125-14-084500","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-05","frame":"CY2012Q4I"},{"end":"2013-03-31","val":134888000,"accn":"0001193125-13-204649","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-07","frame":"CY2013Q1I"},{"end":"2013-06-30","val":136908000,"accn":"0001193125-13-315353","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-02","frame":"CY2013Q2I"},{"end":"2013-09-30","val":140622000,"accn":"0001193125-13-427793","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-05","frame":"CY2013Q3I"},{"end":"2013-12-31","val":142557000,"accn":"0001193125-14-084500","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-05"},{"end":"2013-12-31","val":142557000,"accn":"0001193125-14-185139","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-06"},{"end":"2013-12-31","val":142557000,"accn":"0001193125-14-295793","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-05"},{"end":"2013-12-31","val":142557000,"accn":"0001193125-14-401338","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06"},{"end":"2013-12-31","val":142557000,"accn":"0001340127-15-000011","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-10","frame":"CY2013Q4I"},{"end":"2014-03-31","val":144302000,"accn":"0001193125-14-185139","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-06","frame":"CY2014Q1I"},{"end":"2014-06-30","val":146815000,"accn":"0001193125-14-295793","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-05","frame":"CY2014Q2I"},{"end":"2014-09-30","val":148733000,"accn":"0001193125-14-401338","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-06","frame":"CY2014Q3I"},{"end":"2014-12-31","val":152920000,"accn":"0001340127-15-000011","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-10"},{"end":"2014-12-31","val":152920000,"accn":"0001340127-15-000037","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06"},{"end":"2014-12-31","val":152920000,"accn":"0001340127-15-000058","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-05"},{"end":"2014-12-31","val":152920000,"accn":"0001340127-15-000069","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09"},{"end":"2014-12-31","val":152920000,"accn":"0001340127-16-000153","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-08","frame":"CY2014Q4I"},{"end":"2015-03-31","val":156644000,"accn":"0001340127-15-000037","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-06","frame":"CY2015Q1I"},{"end":"2015-06-30","val":159399000,"accn":"0001340127-15-000058","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-05","frame":"CY2015Q2I"},{"end":"2015-09-30","val":162173000,"accn":"0001340127-15-000069","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09","frame":"CY2015Q3I"},{"end":"2015-12-31","val":165391000,"accn":"0001340127-16-000153","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-08"},{"end":"2015-12-31","val":165391000,"accn":"0001340127-16-000181","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-09"},{"end":"2015-12-31","val":165391000,"accn":"0001340127-16-000223","fy":2016,"fp":"Q2","form":"10-Q","filed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to Additional Paid in Capital, Equity Component of Convertible Debt","description":"Adjustment to additional paid in capital resulting from the recognition of convertible debt instruments as two separate components - a debt component and an equity component. This bifurcation may result in a basis difference associated with the liability component that represents a temporary difference for purposes of applying accounting for income taxes. The initial recognition of deferred taxes for the tax effect of that temporary difference is as an adjustment to additional paid in capital.","units":{"USD":[{"start":"2017-01-01","end":"2017-12-31","val":31451000,"accn":"0001340127-18-000037","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-12"},{"start":"2017-01-01","end":"2017-12-31","val":31451000,"accn":"0001340127-19-000061","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28","frame":"CY2017"}]}},"AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue":{"label":"APIC, Share-based Payment Arrangement, Increase for Cost Recognition","description":"Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.","units":{"USD":[{"start":"2009-01-01","end":"2009-12-31","val":390000,"accn":"0001193125-12-101462","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-07","frame":"CY2009"},{"start":"2010-01-01","end":"2010-12-31","val":542000,"accn":"0001193125-12-101462","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-07"},{"start":"2010-01-01","end":"2010-12-31","val":542000,"accn":"0001193125-13-094067","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06","frame":"CY2010"},{"start":"2011-01-01","end":"2011-12-31","val":1357000,"accn":"0001193125-12-101462","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-07"},{"start":"2011-01-01","end":"2011-12-31","val":1357000,"accn":"0001193125-13-094067","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06"},{"start":"2011-01-01","end":"2011-12-31","val":1357000,"accn":"0001193125-14-084500","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-05","frame":"CY2011"},{"start":"2012-01-01","end":"2012-12-31","val":4157000,"accn":"0001193125-13-094067","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-06"},{"start":"2012-01-01","end":"2012-12-31","val":4157000,"accn":"0001193125-14-084500","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-05"},{"start":"2012-01-01","end":"2012-12-31","val":4157000,"accn":"0001340127-15-000011","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-10","frame":"CY2012"},{"start":"2013-01-01","end":"2013-12-31","val":4777000,"accn":"0001193125-14-084500","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-05"},{"start":"2013-01-01","end":"2013-12-31","val":4777000,"accn":"0001340127-15-000011","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-10"},{"start":"2013-01-01","end":"2013-12-31","val":4777000,"accn":"0001340127-16-000153","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-08","frame":"CY2013"},{"start":"2014-01-01","end":"2014-12-31","val":6065000,"accn":"0001340127-15-000011","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-10"},{"start":"2014-01-01","end":"2014-12-31","val":6065000,"accn":"0001340127-16-000153","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-08"},{"start":"2014-01-01","end":"2014-12-31","val":6065000,"accn":"0001340127-17-000050","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-16","frame":"CY2014"},{"start":"2015-01-01","end":"2015-12-31","val":10216000,"accn":"0001340127-16-000153","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-08"},{"start":"2015-01-01","end":"2015-12-31","val":10216000,"accn":"0001340127-17-000050","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-16"},{"start":"2015-01-01","end":"2015-12-31","val":10216000,"accn":"0001340127-18-000037","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-12","frame":"CY2015"},{"start":"2016-01-01","end":"2016-12-31","val":8983000,"accn":"0001340127-17-000050","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-16"},{"start":"2016-01-01","end":"2016-12-31","val":8983000,"accn":"0001340127-18-000037","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-12"},{"start":"2016-01-01","end":"2016-12-31","val":8983000,"accn":"0001340127-19-000061","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":12960000,"accn":"0001340127-18-000037","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-12"},{"start":"2017-01-01","end":"2017-12-31","val":12960000,"accn":"0001340127-19-000061","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28","frame":"CY2017"},{"start":"2018-01-01","end":"2018-03-31","val":3818000,"accn":"0001340127-19-000111","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-10"},{"start":"2018-01-01","end":"2018-03-31","val":3818000,"accn":"0001340127-19-000159","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-06"},{"start":"2018-01-01","end":"2018-03-31","val":3818000,"accn":"0001340127-19-000187","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2018Q1"},{"start":"2018-04-01","end":"2018-06-30","val":4699000,"accn":"0001340127-19-000159","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-06"},{"start":"2018-04-01","end":"2018-06-30","val":4699000,"accn":"0001340127-19-000187","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2018Q2"},{"start":"2018-07-01","end":"2018-09-30","val":4997000,"accn":"0001340127-19-000187","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2018Q3"},{"start":"2018-01-01","end":"2018-12-31","val":17672000,"accn":"0001340127-19-000061","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-28","frame":"CY2018"},{"start":"2019-01-01","end":"2019-03-31","val":4223000,"accn":"0001340127-19-000111","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-10"},{"start":"2019-01-01","end":"2019-03-31","val":4223000,"accn":"0001340127-19-000159","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-06"},{"start":"2019-01-01","end":"2019-03-31","val":4223000,"accn":"0001340127-19-000187","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-12","frame":"CY2019Q1"},{"start":"2019-04-01","end":"2019-06-30","val":5524000,"accn":"00013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Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. 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Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. 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Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. 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Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the 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Includes noncurrent cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.","units":{"USD":[{"end":"2012-06-30","val":500000,"accn":"0001193125-12-335039","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-03","frame":"CY2012Q2I"},{"end":"2012-09-30","val":500000,"accn":"0001193125-12-444146","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-10-31","frame":"CY2012Q3I"}]}},"RestrictedCashEquivalentsNoncurrent":{"label":"Restricted Cash Equivalents, Noncurrent","description":"Amount of cash equivalents restricted as to withdrawal or usage, classified as noncurrent. 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