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Consolidated Statements of Changes in Stockholders' Equity (USD $) In Thousands, unless otherwise specified | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Unallocated Common Stock Held by ESOP [Member] | Accumulated Other Comprehensive Income [Member] | Retained Earnings [Member]
--- | --- | --- | --- | --- | --- | ---
Stockholders' equity at beginning of period at Dec. 31, 2009 | $ 754,623 | $ 56,203 | $ 422,225 | $ (5,679) | $ (30,456) | $ 312,330
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net Income | 42,933 |  |  |  |  | 42,933
Other comprehensive income | 112,276 |  |  |  | 112,276 |
Conversion of subordinated debentures | 56 | 7 | 49 |  |  |
Treasury Stock, Value, Acquired, Cost Method | (1,224) | (105) | (1,119) |  |  |
Allocation of common stock by ESOP, including excess income tax benefits | 841 |  | (23) | 864 |  |
Share-based compensation, including excess income tax benefits | 12,239 |  | 12,239 |  |  |
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures | 6,346 | 863 | 5,483 |  |  |
Adjustments to Additional Paid in Capital, Warrant Issued | 15,600 |  | 15,600 |  |  |
Payments of Dividends, Common Stock | (5,643) |  |  |  |  | (5,643)
Stockholders' equity at end of period at Dec. 31, 2010 | 938,047 | 56,968 | 454,454 | (4,815) | 81,820 | 349,620
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net Income | 86,248 |  |  |  |  | 86,248
Other comprehensive income | 375,409 |  |  |  | 375,409 |
Treasury Stock, Value, Acquired, Cost Method | (484) | (48) | (436) |  |  |
Allocation of common stock by ESOP, including excess income tax benefits | 1,255 |  | 60 | 1,195 |  |
Share-based compensation, including excess income tax benefits | 10,320 |  | 10,320 |  |  |
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures | 4,800 | 917 | 3,883 |  |  |
Payments of Dividends, Common Stock | (6,916) |  |  |  |  | (6,916)
Stockholders' equity at end of period at Dec. 31, 2011 | 1,408,679 | 57,837 | 468,281 | (3,620) | 457,229 | 428,952
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |
Net Income | 57,798 |  |  |  |  | 57,798
Other comprehensive income | 229,578 |  |  |  | 229,578 |
Conversion of subordinated debentures | 19,591 | 2,564 | 17,027 |  |  |
Allocation of common stock by ESOP, including excess income tax benefits | 1,085 |  | 48 | 1,037 |  |
Share-based compensation, including excess income tax benefits | 6,904 |  | 6,904 |  |  |
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures | 5,805 | 1,350 | 4,455 |  |  |
Payments of Dividends, Common Stock | (9,203) |  |  |  |  | (9,203)
Stockholders' equity at end of period at Dec. 31, 2012 | $ 1,720,237 | $ 61,751 | $ 496,715 | $ (2,583) | $ 686,807 | $ 477,547

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