Quarterly report pursuant to Section 13 or 15(d)

Share-Based Payments - Non-employee Director Non-vested Shares (Details)

v2.4.0.8
Share-Based Payments - Non-employee Director Non-vested Shares (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-Employee Director Shares, Vesting Period (in years)     1 year  
Share-based compensation expense $ 1,536 $ 1,517 $ 3,094 $ 3,123
Nonemployee Director Nonvested Shares Granted Member
        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Outstanding and non-vested, beginning of period (in shares) 20   20  
Grants in Period 15   15  
Shares Vested in Period (20)   (20)  
Outstanding and non-vested, end of period (in shares) 15   15  
Outstanding and non-vested, weighted-average grant date fair value, beginning of period $ 32   $ 32  
Grants in Period, Weighted Average Grant Date Fair Value $ 38   $ 38  
Vested in Period, Weighed-average grant date fair value $ 32   $ 32  
Outstanding and non-vested, weighted-average grant date fair value, end of period $ 38   $ 38  
Outstanding and non-vested, aggregate grant date fair value 560   560  
Share-based compensation expense 151 173 308 365
Tax benefit related to share-based expense 58 67 118 141
Unrecognized share-based compensation, net of estimated forfeitures $ 476 $ 546 $ 476 $ 546