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Common stock represent the ownership interest in a 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This item includes treasury stock repurchased by the entity. 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return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.","units":{"USD":[{"start":"2014-01-01","end":"2014-12-31","val":0,"accn":"0001144204-17-014505","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14","frame":"CY2014"},{"start":"2015-01-01","end":"2015-06-30","val":0,"accn":"0001144204-16-119189","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-15"},{"start":"2015-01-01","end":"2015-09-30","val":0,"accn":"0001144204-16-133929","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0001144204-17-014505","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2015"},{"start":"2016-01-01","end":"2016-06-30","val":137000,"accn":"0001144204-16-119189","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-15"},{"start":"2016-01-01","end":"2016-06-30","val":137000,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2016-01-01","end":"2016-09-30","val":137000,"accn":"0001144204-16-133929","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2016-01-01","end":"2016-09-30","val":137000,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09"},{"start":"2016-01-01","end":"2016-12-31","val":137000,"accn":"0001144204-17-014505","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14"},{"start":"2016-01-01","end":"2016-12-31","val":137000,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2016"},{"start":"2017-01-01","end":"2017-06-30","val":0,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2017-01-01","end":"2017-09-30","val":0,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09"},{"start":"2017-01-01","end":"2017-12-31","val":0,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2017"}]}},"GainLossOnSaleOfLoansAndLeases":{"label":"Gain 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This element refers to the gain (loss) and not to the cash proceeds of the sales. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.","units":{"USD":[{"start":"2013-01-01","end":"2013-09-30","val":0,"accn":"0001144204-14-067562","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13"},{"start":"2013-01-01","end":"2013-12-31","val":-128000,"accn":"0001144204-15-017576","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20","frame":"CY2013"},{"start":"2014-01-01","end":"2014-09-30","val":114000,"accn":"0001144204-14-067562","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13"},{"start":"2014-01-01","end":"2014-09-30","val":114000,"accn":"0001144204-15-065349","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-13"},{"start":"2014-01-01","end":"2014-12-31","val":114000,"accn":"0001144204-15-017576","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-20"},{"start":"2014-01-01","end":"2014-12-31","val":114000,"accn":"0001144204-16-088490","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-16"},{"start":"2014-01-01","end":"2014-12-31","val":114000,"accn":"0001144204-17-014505","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14","frame":"CY2014"},{"start":"2015-01-01","end":"2015-06-30","val":0,"accn":"0001144204-16-119189","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-15"},{"start":"2015-04-01","end":"2015-06-30","val":0,"accn":"0001144204-16-119189","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-15","frame":"CY2015Q2"},{"start":"2015-01-01","end":"2015-09-30","val":0,"accn":"0001144204-15-065349","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-13"},{"start":"2015-01-01","end":"2015-09-30","val":0,"accn":"0001144204-16-133929","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2015-07-01","end":"2015-09-30","val":0,"accn":"0001144204-16-133929","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14","frame":"CY2015Q3"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0001144204-16-088490","fy":2015,"fp":"FY","form":"10-K","filed":"2016-03-16"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0001144204-17-014505","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14"},{"start":"2015-01-01","end":"2015-12-31","val":0,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2015"},{"start":"2016-01-01","end":"2016-06-30","val":218000,"accn":"0001144204-16-119189","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-15"},{"start":"2016-01-01","end":"2016-06-30","val":218000,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2016-04-01","end":"2016-06-30","val":218000,"accn":"0001144204-16-119189","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-15"},{"start":"2016-04-01","end":"2016-06-30","val":218000,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09","frame":"CY2016Q2"},{"start":"2016-01-01","end":"2016-09-30","val":227000,"accn":"0001144204-16-133929","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2016-01-01","end":"2016-09-30","val":227000,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09"},{"start":"2016-07-01","end":"2016-09-30","val":9000,"accn":"0001144204-16-133929","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2016-07-01","end":"2016-09-30","val":9000,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09","frame":"CY2016Q3"},{"start":"2016-01-01","end":"2016-12-31","val":314000,"accn":"0001144204-17-014505","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14"},{"start":"2016-01-01","end":"2016-12-31","val":314000,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2016"},{"start":"2017-01-01","end":"2017-06-30","val":0,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2017-04-01","end":"2017-06-30","val":0,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09","frame":"CY2017Q2"},{"start":"2017-01-01","end":"2017-09-30","val":0,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09"},{"start":"2017-07-01","end":"2017-09-30","val":0,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09","frame":"CY2017Q3"},{"start":"2017-01-01","end":"2017-12-31","val":38000,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2017"}]}},"GainLossOnSaleOfMortgageLoans":{"label":"Gain (Loss) on Sale of Mortgage Loans","description":"The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. 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K","filed":"2017-03-14"},{"start":"2015-01-01","end":"2015-12-31","val":3751000,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2015"},{"start":"2016-01-01","end":"2016-03-31","val":774000,"accn":"0001144204-16-102425","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-16"},{"start":"2016-01-01","end":"2016-03-31","val":774000,"accn":"0001144204-17-026054","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-10","frame":"CY2016Q1"},{"start":"2016-01-01","end":"2016-06-30","val":1700000,"accn":"0001144204-16-119189","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-15"},{"start":"2016-01-01","end":"2016-06-30","val":1700000,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2016-04-01","end":"2016-06-30","val":926000,"accn":"0001144204-16-119189","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-15"},{"start":"2016-04-01","end":"2016-06-30","val":926000,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09","frame":"CY2016Q2"},{"start":"2016-01-01","end":"2016-09-30","val":2536000,"accn":"0001144204-16-133929","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2016-01-01","end":"2016-09-30","val":2536000,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09"},{"start":"2016-07-01","end":"2016-09-30","val":836000,"accn":"0001144204-16-133929","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-14"},{"start":"2016-07-01","end":"2016-09-30","val":836000,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09","frame":"CY2016Q3"},{"start":"2016-01-01","end":"2016-12-31","val":3413000,"accn":"0001144204-17-014505","fy":2016,"fp":"FY","form":"10-K","filed":"2017-03-14"},{"start":"2016-01-01","end":"2016-12-31","val":3413000,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2016"},{"start":"2017-01-01","end":"2017-03-31","val":1006000,"accn":"0001144204-17-026054","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-10"},{"start":"2017-01-01","end":"2017-03-31","val":1006000,"accn":"0001144204-18-026999","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-10","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":1848000,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09"},{"start":"2017-04-01","end":"2017-06-30","val":842000,"accn":"0001144204-17-041688","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-09","frame":"CY2017Q2"},{"start":"2017-01-01","end":"2017-09-30","val":2658000,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09"},{"start":"2017-07-01","end":"2017-09-30","val":810000,"accn":"0001144204-17-057744","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-11-09","frame":"CY2017Q3"},{"start":"2017-01-01","end":"2017-12-31","val":3425000,"accn":"0001144204-18-015207","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-16","frame":"CY2017"},{"start":"2018-01-01","end":"2018-03-31","val":745000,"accn":"0001144204-18-026999","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-05-10","frame":"CY2018Q1"}]}},"OtherPostretirementBenefitExpense":{"label":"Other 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Borrowers of securities generally are required to provide collateral to the lenders of securities, commonly cash but sometimes other securities or standby letters of credit, with a value slightly higher than that of the securities borrowed. In instances where the entity is permitted to sell or re-pledge these securities, the entity reports the fair value of the collateral received and the related obligation to return the collateral as a 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Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. 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