Quarterly report pursuant to Section 13 or 15(d)

Share - Based Compensation (Details)

v2.4.0.6
Share - Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Y
Stock options granted pursuant to Equity Incentive Plan  
Outstanding, Shares, Beginning of Period 206,400
Outstanding, Weighted average exercise price, Beginning of Period $ 7.62
Stock options granted 0
Granted, Weighted average exercise price $ 0.00
Exercised, Shares (1,013)
Exercised, Weighted average exercise price $ 6.95
Cancelled, Shares (208)
Cancelled, Weighted average exercise price $ 6.95
Outstanding, Shares, End of Period 205,179
Outstanding, Weighted average exercise price, End of Period $ 7.62
Exercisable, Shares 205,179
Exercisable, Weighted Average Exercise Price $ 7.62
Outstanding, Weighted Average Remaining Contractual Term, End of Period 1.0
Exercisable, Weighted Average Remaining Contractual Term 1.0
Outstanding, Aggregate Intrinsic Value, End of Period $ 1,047,655
Exercisable, Aggregate Intrinsic Value $ 1,047,655
Summary of nonvested shares related to Equity Incentive Plan  
Nonvested, Shares, Beginning of Period 740,493
Nonvested, Weighted average grant - date fair value, Beginning of period $ 19.02
Granted, Shares 0
Granted, Weighted average grant - date fair value $ 0.00
Vested, Shares (25,834)
Vested, Weighted average grant - date fair value $ 30.28
Cancelled, Shares 0
Cancelled, Weighted average grant - date fair value $ 0.00
Nonvested, Shares, End of Period 714,659
Nonvested, Weighted average grant - date fair value, End of period $ 18.61