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Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Current Assets: |  |
Receivables, allowance for doubtful accounts | $ 805 | $ 924
Property and Equipment, accumulated depreciation | 201,418 | 182,453
Capitalized Software, accumulated amortization | $ 149,747 | $ 117,100
Stockholders' Equity: |  |
Series Preferred stock, par value | $ 0.05 | $ 0.05
Series Preferred stock, shares authorized | 50 | 50
Series Preferred stock, shares issued | 0 | 0
Series Preferred stock, shares outstanding | 0 | 0
Common stock, par value | $ 0.01 | $ 0.01
Common stock, shares authorized | 750,000 | 750,000
Common stock, shares issued | 172,220 | 176,506
Common stock, shares outstanding | 172,220 | 176,506

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