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Shared-Based Compensation (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Shared-Based Compensation (Textual) [Abstract]        
Allocated Share-based Compensation Expense $ 510 $ 353 $ 1,394 $ 469
Share awards and options, granted     285 216
Vesting period     3 years  
Shares granted other than options     78 75
Expenses related to issuance of restricted stock     608 199
Stock or Unit Option Plan Expense     $ 786 $ 270