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Consolidated Statements Of Changes In Shareholders' Equity (USD $) In Thousands | Total | Surplus [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Common Class A [Member] | Common Class A [Member] Common Stock [Member] | Common Class A [Member] Retained Earnings [Member] | Common Class B [Member] | Common Class B [Member] Common Stock [Member] | Common Class B [Member] Surplus [Member] | Common Class B [Member] Retained Earnings [Member] | Common Class B [Member] Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 1,559,115 |  | $ 143,766 | $ 1,429,863 | $ (24,949) | $ 8,757 |  |  | $ 1,678 |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 162,959 |  | 0 | 162,959 | 0 | 0 |  |  | 0 |  |  |  |
Change in unrealized securities gains arising during period, net of deferred tax | 5,567 |  | 0 | 0 | 5,567 | 0 |  |  | 0 |  |  |  |
Reclassification adjustment for (gains)/losses included in net income, net of deferred tax (benefit) | (1,398) |  | 0 | 0 | (1,398) | 0 |  |  | 0 |  |  |  |
Change in pension liability, net of deferred tax | 1,830 |  | 0 | 0 | 1,830 | 0 |  |  | 0 |  |  |  |
Change in unrecognized loss on cash flow hedges, net of deferred tax benefit | (5,383) |  | 0 | 0 | (5,383) | 0 |  |  | 0 |  |  |  |
Total comprehensive income | 163,575 |  |  |  |  |  |  |  |  |  |  |  |
Cash dividends | (9,390) |  | 0 | (9,390) | 0 | 0 |  |  | 0 |  |  |  |
Balance at Sep. 30, 2010 | 1,718,204 | [1] | 143,766 | 1,588,336 | (24,333) | 8,757 |  |  | 1,678 |  |  |  |
Balance at Dec. 31, 2010 | 1,732,962 | [2] | 143,766 | 1,615,290 | (36,529) | 8,757 |  |  | 1,678 |  |  |  |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | 164,995 |  | 0 | 164,995 | 0 | 0 |  |  | 0 |  |  |  |
Change in unrealized securities gains arising during period, net of deferred tax | 3,240 |  | 0 | 0 | 3,240 | 0 |  |  | 0 |  |  |  |
Reclassification adjustment for (gains)/losses included in net income, net of deferred tax (benefit) | 198 |  | 0 | 0 | 198 | 0 |  |  | 0 |  |  |  |
Change in pension liability, net of deferred tax | 3,008 |  | 0 | 0 | 3,008 | 0 |  |  | 0 |  |  |  |
Change in unrecognized loss on cash flow hedges, net of deferred tax benefit | (2,444) |  | 0 | 0 | (2,444) | 0 |  |  | 0 |  |  |  |
Total comprehensive income | 168,997 |  |  |  |  |  |  |  |  |  |  |  |
Repurchase of shares of common stock |  |  |  |  |  | (13,063) | (88) | (12,975) | (7,602) | (38) | 0 | (7,564) | 0
Cash dividends | (9,364) |  | 0 | (9,364) | 0 | 0 |  |  | 0 |  |  |  |
Balance at Sep. 30, 2011 | $ 1,871,930 | [1] | $ 143,766 | $ 1,750,382 | $ (32,527) | $ 8,669 |  |  | $ 1,640 |  |  |  |
[1] | Unaudited
[2] | Derived from 2010 Annual Report on Form 10-K.

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