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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, 2009 | $ 113,952 | $ 297 | $ 75 | $ 588,622 | $ (461,610) | $ (13,432)
Opening Balance SHARES at Dec. 31, 2009 |  | 29,755,161 | 7,457,532 |  |  |
Conversion of Class B common stock to Class A common stock SHARES |  | 90,000 | (90,000) |  |  |
Compensation expense related to granting of stock options SHARES |  | 0 | 0 |  |  |
Compensation expense related to granting of restricted stock units SHARES |  | 941,213 | 0 |  |  |
Issuance of common stock related to an incentive plan SHARES |  | 0 | 0 |  |  |
Common stock repurchase SHARES |  | 0 | 0 |  |  |
Exercise of stock options SHARES |  | 97,725 | 0 |  |  |
Purchase of vested employee restricted stock units SHARES |  | (183,531) | 0 |  |  |
Net income (loss) | 46,436 | 0 | 0 | 0 | 46,436 | 0
Conversion of Class B common stock to Class A common stock VALUE | 0 | 1 | (1) | 0 | 0 | 0
Compensation expense related to granting of stock options VALUE | 549 | 0 | 0 | 549 | 0 | 0
Compensation expense related to granting of restricted stock units VALUE | 4,979 | 10 | 0 | 4,969 | 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 | (1,628) | (2) | 0 | (1,626) | 0 | 0
Net dividend equivalents on restricted stock units net of forfeitures and payments VALUE | 94 | 0 | 0 | 0 | 94 | 0
Realization of tax benefit for dividend equivalent payments VALUE | 0 | 0 | 0 | 0 | 0 | 0
Exercise of stock options VALUE | 130 | 1 | 0 | 129 | 0 | 0
Net unrealized gain (loss) on derivatives VALUE | 6,155 | 0 | 0 | 0 | 0 | 6,155
Ending Balance VALUE at Dec. 31, 2010 | 170,667 | 307 | 74 | 592,643 | (415,080) | (7,277)
Ending Balance SHARES at Dec. 31, 2010 |  | 30,700,568 | 7,367,532 |  |  |
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 |  | 421,781 | 0 |  |  |
Issuance of common stock related to an incentive plan SHARES |  | 0 | 0 |  |  |
Common stock repurchase SHARES |  | 0 | 0 |  |  |
Exercise of stock options SHARES | (51,750) | 51,750 | 0 |  |  |
Purchase of vested employee restricted stock units SHARES |  | (290,186) | 0 |  |  |
Net income (loss) | 57,986 | 0 | 0 | 0 | 57,986 | 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 | 400 | 0 | 0 | 400 | 0 | 0
Compensation expense related to granting of restricted stock units VALUE | 5,827 | 4 | 0 | 5,823 | 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 | (3,022) | (3) | 0 | (3,019) | 0 | 0
Payments of dividends VALUE | 0 | 0 | 0 | 0 | 0 | 0
Net dividend equivalents on restricted stock units net of forfeitures and payments VALUE | 0 | 0 | 0 | 0 | 0 | 0
Exercise of stock options VALUE | 69 | 1 | 0 | 68 | 0 | 0
Net unrealized gain (loss) on investments VALUE | 0 | 0 | 0 | 0 | 0 | 0
Net unrealized gain (loss) on derivatives VALUE | 9,174 | 0 | 0 | 0 | 0 | 9,174
Ending Balance VALUE at Sep. 30, 2011 | $ 241,101 | $ 309 | $ 74 | $ 595,915 | $ (357,094) | $ 1,897
Ending Balance SHARES at Sep. 30, 2011 |  | 30,883,913 | 7,367,532 |  |  |

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