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Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Current deferred tax asset (liability): |  |
Accounts receivable allowance for doubtful accounts | $ 4,638 | $ 14,713
State taxes | (764) | (1,512)
Estimated litigation loss | 76 | 2,275
Other | (597) | 602
Current deferred tax asset | 3,353 | 16,078
Non-current deferred tax asset (liability): |  |
Depreciation and Leases | (18,763) | (7,719)
Share-based compensation | 6,664 | 4,561
Deferred rent | 2,353 | 543
Intangibles | 4,121 | 4,977
Other | 291 | 438
Non-current deferred tax asset | (5,334) | 2,800
Net deferred tax asset | $ (1,981) | $ 18,878

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