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Consolidated Statements of Changes In Shareholders' Equity (USD $) In Thousands, unless otherwise specified | Total | Class A Common Stock [Member] | Class B Common Stock [Member] | Common Stock [Member] Class A Common Stock [Member] | Common Stock [Member] Class B Common Stock [Member] | Surplus [Member] | Surplus [Member] Class B Common Stock [Member] | Retained Earnings [Member] | Retained Earnings [Member] Class B Common Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Accumulated Other Comprehensive Income (Loss) [Member] Class B Common Stock [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 1,732,962 |  |  |  | $ 8,757 | $ 1,678 | $ 143,766 |  | $ 1,615,290 |  | $ (36,529) |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |
Net income | 61,760 |  |  |  | 0 | 0 | 0 |  | 61,760 |  | 0 |
Other comprehensive income, net of tax | (3,378) |  |  |  | 0 | 0 | 0 |  | 0 |  | (3,378) |
Total comprehensive income | 58,382 |  |  |  |  |  |  |  |  |  |  |
Cash dividends | (3,130) |  |  |  | 0 | 0 | 0 |  | (3,130) |  | 0 |
Balance at Mar. 31, 2011 | 1,788,214 | [1] |  |  | 8,757 | 1,678 | 143,766 |  | 1,673,920 |  | (39,907) |
Balance at Dec. 31, 2011 | 1,861,128 | [2] |  |  | 8,644 | 1,640 | 143,766 |  | 1,773,652 |  | (66,574) |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |
Net income | 35,495 |  |  |  | 0 | 0 | 0 |  | 35,495 |  | 0 |
Other comprehensive income, net of tax | 158 |  |  |  | 0 | 0 | 0 |  | 0 |  | 158 |
Total comprehensive income | 35,653 |  |  |  |  |  |  |  |  |  |  |
Repurchase of 8,388 shares of Class B common stock |  |  | 0 | (1,573) |  | (9) |  | 0 |  | (1,564) |  | 0
Cash dividends | (3,085) |  |  |  | 0 | 0 | 0 |  | (3,085) |  | 0 |
Balance at Mar. 31, 2012 | $ 1,892,123 | [1] |  |  | $ 8,644 | $ 1,631 | $ 143,766 |  | $ 1,804,498 |  | $ (66,416) |
[1] | Unaudited
[2] | Derived from 2011 Annual Report on Form 10-K.

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