XML 82 R71.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stock-Based Compensation - Restricted Stock Units (Details) - Restricted stock units - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years    
Compensation cost not yet recognized $ 10,600    
Compensation cost not yet recognized, period for recognition 3 years 2 months 12 days    
Number of RSU's      
Outstanding, beginning balance (in shares) 61,482    
Granted (in shares) 327,200 0  
Vested (in shares) 0    
Forfeited (in shares) (3,060)    
Outstanding, ending balance (in shares) 385,622    
Vested and expected to vest after end of period (in shares) 385,622    
Weighted Average Grant Date Fair Value      
Outstanding, beginning balance (in dollars per share) $ 30.00    
Granted (in dollars per share) 30.87    
Vested (in dollars per share) 0.00    
Forfeited (in dollars per share) 29.26    
Outstanding, ending balance (in dollars per share) 30.75    
Vested and expected to vest after end of period (in dollars per share) $ 30.75    
Aggregate Intrinsic Value (in thousands)      
Outstanding $ 14,511   $ 1,711
Granted 10,101    
Vested and expected to vest after end of period $ 14,511