Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Share-based Compensation (Details)

v3.2.0.727
Summary of Significant Accounting Policies - Share-based Compensation (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation $ 453 $ 707 $ 971 $ 1,425
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Non-vested stock options unrecognized compensation expense $ 4,524   $ 4,524  
Non-vested stock options unrecognized compensation expense, weighted-average period of recognition     3 years 1 month 10 days