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Share-based Compensation - Restricted Stock Activity (Details) (Restricted Stock, USD $)
In Thousands, except Share data, unless otherwise specified
6 Months Ended 12 Months Ended
Dec. 31, 2012
Jun. 30, 2012
Restricted Stock
   
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]    
Shares awarded, beginning balance 175,947  
Shares awarded, granted 44,374  
Shares awarded, vested (43,513)  
Shares awarded, cancelled/forfeited (18,143)  
Shares awarded, ending balance 158,665 175,947
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]    
Weighted average grant date fair value, beginning balance $ 10.16  
Weighted average grant date fair value, granted $ 11.39  
Weighted average grant date fair value, vested $ 12.58  
Weighted average grant date fair value, cancelled/forfeited $ 10.35  
Weighted average grant date fair value, ending balance $ 9.82 $ 10.16
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]    
Weighted average remaining life 2 years 1 month 6 days 1 year 10 months 24 days
Aggregate intrinsic value, beginning balance $ 1,401  
Aggregate intrinsic value, granted 505  
Aggregate intrinsic value, vested 0  
Aggregate intrinsic value, ending balance 1,192 1,401
Vested and expected to vest, outstanding, number 134,218  
Vested and expected to vest, weighted average exercise price $ 9.78  
Vested and expected to vest, weighted average remaining life 2 years 1 month 6 days  
Vested and expected to vest, aggregate intrinsic value $ 1,053