XML 54 R43.htm IDEA: XBRL DOCUMENT v3.7.0.1
COMMON STOCK AND STOCKHOLDERS' EQUITY - SUMMARY OF RESTRICTED STOCK UNIT AND RESTRICTED STOCK AWARD ACTIVITY (Details) - Restricted Stock Units and Restricted Stock Awards - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]    
Unvested shares, beginning balance (in shares) 743,693  
Granted (in shares) 720,346  
Vested (in shares) (187,783)  
Forfeited (in shares) (55,777)  
Unvested shares, ending balance (in shares) 1,220,479 743,693
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]    
Unvested, beginning balance (in dollars per share) $ 14.49  
Granted (in dollars per share) 26.89  
Vested (in dollars per share) 13.70  
Forfeited (in dollars per share) 16.51  
Unvested, ending balance (in dollars per share) $ 21.83 $ 14.49
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]    
Weighted Average Remaining Contractual Life (years), Unvested balance 3 years 4 months 24 days 3 years 9 months 18 days
Aggregate Intrinsic Value, Unvested balance $ 33,197 $ 15,841