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CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (USD $) In Thousands, except Share data | Total | Common Class A Member | Common Class B Member | Additional Paid In Capital Member | Retained Earnings Member | Accumulated Other Comprehensive Income (Loss) Member
--- | --- | --- | --- | --- | --- | ---
Opening Balance VALUE at Dec. 31, 2010 | $ 170,667 | $ 307 | $ 74 | $ 592,643 | $ (415,080) | $ (7,277)
Opening Balance SHARES at Dec. 31, 2010 |  | 30,700,568 | 7,367,532 |  |  |
Conversion of Class B common stock to Class A common stock SHARES |  | 170,000 | (170,000) |  |  |
Compensation expense related to granting of stock options SHARES |  | 0 | 0 |  |  |
Compensation expense related to granting of restricted stock units SHARES |  | 416,906 | 0 |  |  |
Issuance of common stock related to an incentive plan SHARES |  | 0 | 0 |  |  |
Common stock repurchase SHARES |  | 0 | 0 |  |  |
Exercise of stock options SHARES |  | 53,625 | 0 |  |  |
Purchase of vested employee restricted stock units SHARES |  | (297,098) | 0 |  |  |
Net income (loss) | 68,510 | 0 | 0 | 0 | 68,510 | 0
Conversion of Class B common stock to Class A common stock VALUE | 0 | 2 | (2) | 0 | 0 | 0
Compensation expense related to granting of stock options VALUE | 462 | 0 | 0 | 462 | 0 | 0
Compensation expense related to granting of restricted stock units VALUE | 7,209 | 4 | 0 | 7,205 | 0 | 0
Issuance of common stock related to an incentive plan VALUE | 0 | 0 | 0 | 0 | 0 | 0
Common stock repurchase VALUE | 0 | 0 | 0 | 0 | 0 | 0
Purchase of vested employee restricted stock units VALUE | (3,057) | (3) | 0 | (3,054) | 0 | 0
Forfeitures of dividend equivalents VALUE | 5 | 0 | 0 | 0 | 5 | 0
Realization of tax benefit for dividend equivalent payments VALUE | 0 | 0 | 0 | 0 | 0 | 0
Exercise of stock options VALUE | 71 | 0 | 0 | 71 | 0 | 0
Net unrealized gain (loss) on derivatives VALUE | 7,277 | 0 | 0 | 0 | 0 | 7,277
Ending Balance VALUE at Dec. 31, 2011 | 251,144 | 310 | 72 | 597,327 | (346,565) | 0
Ending Balance SHARES at Dec. 31, 2011 |  | 31,044,001 | 7,197,532 |  |  |
Conversion of Class B common stock to Class A common stock SHARES |  | 0 | 0 |  |  |
Compensation expense related to granting of stock options SHARES | 0 | 0 | 0 |  |  |
Compensation expense related to granting of restricted stock units SHARES |  | 281,791 | 0 |  |  |
Issuance of common stock related to an incentive plan SHARES |  | 0 | 0 |  |  |
Common stock repurchase SHARES |  | 0 | 0 |  |  |
Exercise of stock options SHARES | (40,400) | 40,400 | 0 |  |  |
Purchase of vested employee restricted stock units SHARES |  | (37,876) | 0 |  |  |
Net income (loss) | (1,049) | 0 | 0 | 0 | (1,049) | 0
Conversion of Class B common stock to Class A common stock VALUE | 0 | 0 | 0 | 0 | 0 | 0
Compensation expense related to granting of stock options VALUE | 79 | 0 | 0 | 79 | 0 | 0
Compensation expense related to granting of restricted stock units VALUE | 1,318 | 3 | 0 | 1,315 | 0 | 0
Issuance of common stock related to an incentive plan VALUE | 0 | 0 | 0 | 0 | 0 | 0
Common stock repurchase VALUE | 0 | 0 | 0 | 0 | 0 | 0
Purchase of vested employee restricted stock units VALUE | (301) | 0 | 0 | (301) | 0 | 0
Payments of dividends VALUE | 0 | 0 | 0 | 0 | 0 | 0
Forfeitures of dividend equivalents VALUE | 9 | 0 | 0 | 0 | 9 | 0
Exercise of stock options VALUE | 54 | 0 | 0 | 54 | 0 | 0
Net unrealized gain (loss) on investments VALUE | 0 | 0 | 0 | 0 | 0 | 0
Net unrealized gain (loss) on derivatives VALUE | 0 | 0 | 0 | 0 | 0 | 0
Ending Balance VALUE at Mar. 31, 2012 | $ 251,254 | $ 313 | $ 72 | $ 598,474 | $ (347,605) | $ 0
Ending Balance SHARES at Mar. 31, 2012 |  | 31,328,316 | 7,197,532 |  |  |

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