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Share-Based Compensation - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
May. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based compensation expense recognized   $ 4,065 $ 4,651 $ 5,567  
Unrecognized stock-based compensation expense   $ 4,900      
Unrecognized stock-based compensation expense, weighted-average recognition period   1 year 10 months 24 days      
Restricted Stock Units (RSUs)          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Restricted stock units issued 180,000        
Vesting period 2 years 3 years      
Deferred Stock Units          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Share-based compensation expense recognized   $ 500 $ 500 $ 500  
2010 Incentive Award Plan          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Maximum number of shares to be issued         4,398,613
Incentive plan and award expiration date   Apr. 09, 2024      
Shares available for future issuance   1,986,154      
2010 Incentive Award Plan | Restricted Stock Units (RSUs)          
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]          
Total fair value of restricted stock vested   $ 5,100