XML 71 R55.htm IDEA: XBRL DOCUMENT v3.8.0.1
Stock-Based Compensation - Restricted Stock Awards (Details) - Restricted Stock Awards - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vested in period, fair value $ 2,700 $ 3,300 $ 750
Number of Shares (in shares):      
Unvested at beginning of period (in shares) 353,335    
Granted (in shares) 0    
Forfeited (in shares) 0    
Vested (in shares) (190,003)    
Unvested at end of period (in shares) 163,332 353,335  
Weighted-Average Grant Date Fair Value (in dollars per share)      
Unvested at beginning of period, weighted-average grant date fair value (in dollars per share) $ 13.40    
Grants in period, weighted-average grant date fair value (in dollars per share) 0    
Forfeited, weighted-average grant date fair value (in dollars per share) 0    
Vested, weight-average grant date fair value (in dollars per share) 13.40    
Unvested at end of period, weighted-average grant date fair value (in dollars per share) $ 13.40 $ 13.40  
Unrecognized compensation expense $ 200    
Unrecognized compensation expense, period for recognition 1 month 6 days    
Executive Officers      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Non-employee Members, Board of Directors      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 1 year