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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 29,755,1617,457,532   
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 00   
Compensation expense related to granting of restricted stock units SHARES 941,2130   
Issuance of common stock related to an incentive plan SHARES 00   
Common stock repurchase SHARES 00   
Exercise of stock options SHARES 97,7250   
Purchase of vested employee restricted stock units SHARES (183,531)0   
Net income (loss)46,43600046,4360
Conversion of Class B common stock to Class A common stock VALUE01(1)000
Compensation expense related to granting of stock options VALUE5490054900
Compensation expense related to granting of restricted stock units VALUE4,9791004,96900
Issuance of common stock related to an incentive plan VALUE000000
Common stock repurchase VALUE000000
Purchase of vested employee restricted stock units(1,628)(2)0(1,626)00
Net dividend equivalents on restricted stock units net of forfeitures and payments VALUE94000940
Realization of tax benefit for dividend equivalent payments VALUE000000
Exercise of stock options VALUE1301012900
Net unrealized gain (loss) on derivatives VALUE6,15500006,155
Ending Balance VALUE at Dec. 31, 2010170,66730774592,643(415,080)(7,277)
Ending Balance SHARES at Dec. 31, 2010 30,700,5687,367,532   
Conversion of Class B common stock to Class A common stock SHARES 00   
Compensation expense related to granting of stock options SHARES000   
Compensation expense related to granting of restricted stock units SHARES 421,7810   
Issuance of common stock related to an incentive plan SHARES 00   
Common stock repurchase SHARES 00   
Exercise of stock options SHARES(51,750)51,7500   
Purchase of vested employee restricted stock units SHARES (290,186)0   
Net income (loss)57,98600057,9860
Conversion of Class B common stock to Class A common stock VALUE000000
Compensation expense related to granting of stock options VALUE4000040000
Compensation expense related to granting of restricted stock units VALUE5,827405,82300
Issuance of common stock related to an incentive plan VALUE000000
Common stock repurchase VALUE000000
Purchase of vested employee restricted stock units(3,022)(3)0(3,019)00
Payments of dividends VALUE000000
Net dividend equivalents on restricted stock units net of forfeitures and payments VALUE000000
Exercise of stock options VALUE69106800
Net unrealized gain (loss) on investments VALUE000000
Net unrealized gain (loss) on derivatives VALUE9,17400009,174
Ending Balance VALUE at Sep. 30, 2011$ 241,101$ 309$ 74$ 595,915$ (357,094)$ 1,897
Ending Balance SHARES at Sep. 30, 2011 30,883,9137,367,532