Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Summary of nonvested restricted stock award activity) (Details)

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Stockholders' Equity (Summary of nonvested restricted stock award activity) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
9 Months Ended
Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]  
Nonvested, Beginning (shares) 1,556
Granted (Shares) 520
Vested (Shares) (991)
Forfeited (Shares) (9)
Nonvested, Ending (shares) 1,076
Nonvested, Beginning (Weighted Average Grant Date Fair Value) $ 6.89
Granted (Weighted Average Grant Date Fair Value) $ 9.58
Vested (Weighted Average Grant Date Fair Value) $ 4.90
Forfeited (Weighted Average Grant Date Fair Value) $ 10.88
Nonvested, Ending (Weighted Average Grant Date Fair Value) $ 10.01