Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Restricted Stock Unit Activity (Details)

v3.10.0.1
STOCK-BASED COMPENSATION - Restricted Stock Unit Activity (Details) - Restricted Stock Unit Awards [Member]
6 Months Ended
Jun. 30, 2018
$ / shares
shares
Shares of Restricted Stock Units [Roll Forward]  
Outstanding at beginning of period (in shares) | shares 387,702
Granted (in shares) | shares 102,317
Forfeited (in shares) | shares (48,631)
Vested (in shares) | shares (92,513)
Outstanding at end of period (in shares) | shares 348,875
Weighted Average Grant Date Price per Share [Abstract]  
Outstanding at beginning of period (in dollars per share) | $ / shares $ 11.39
Granted (in dollars per share) | $ / shares 12.15
Forfeited (in dollars per share) | $ / shares 10.88
Vested (in dollars per share) | $ / shares 11.79
Outstanding at end of period (in dollars per share) | $ / shares $ 11.53