Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Summary of Option activity under the Stock Option Plan) (Details)

v2.4.0.6
Stockholders' Equity (Summary of Option activity under the Stock Option Plan) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Outstanding, beginning (Shares) 1,087
Exercised (Shares) (320)
Forfeited (Shares) (14)
Expired (Shares) (34)
Outstanding, ending (Shares) 719
Exercisable (Shares) 676
Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price [Rollforward]  
Oustanding, beginning (Weighted Average Exercise Price) $ 7.27
Exercised (Weighted Average Exercise Price) $ 6.62
Forfeited (Weighted Average Exercise Price) $ 5.86
Expired (Weighted Average Exercise Price) $ 5.93
Oustanding, ending (Weighted Average Exercise Price) $ 7.65
Exercisable (Weighted Average Exercise Price) $ 7.71
Outstanding, Weighted Average Contractual Term 3 years 8 months 12 days
Exercisable, Weighted Average Contractual Term 3 years 6 months 0 days
Outstanding, Aggregated Intrinsic Value $ 1,503
Exercisable, Aggregated Intrinsic Value $ 1,377