STOCK OPTIONS (Details 3) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares shares
Summary of option activity - Shares
Outstanding at the beginning of year (in shares) | shares	2,606,737
Granted (in shares) | shares	243,899
Forfeited (in shares) | shares	(75,168)
Exercised (in shares) | shares	(229,276)
Outstanding at the end of period (in shares) | shares	2,546,192
Vested at the end of period (in shares) | shares	1,298,027
Summary of option activity - Weighted Average Exercise Price
Outstanding at the beginning of year (in dollars per shares)	$ 6.58
Granted (in dollars per shares)	13.38
Forfeited (in dollars per shares)	9.13
Exercised (in dollars per shares)	6.19
Outstanding at the end of period (in dollars per shares)	7.17
Vested at the end of period (in dollars per share)	$ 6.33
Option activity disclosures
Weighted Average Remaining Contractual Term - Outstanding	7 years 5 months 3 days
Weighted Average Remaining Contractual Term - Vested	6 years 2 months 29 days
Aggregate Intrinsic Value - Outstanding (in dollars) | $	$ 6,032
Aggregate Intrinsic Value - Vested (in dollars) | $	$ 3,935
Stock Option
Weighted average grant-date fair value of options granted	$ 11.29
Total fair value of options vested | $	$ 4,151
Total unrecognized compensation expense, related to non-vested share-based compensation arrangements | $	$ 5,365
Period for unrecognized compensation expense is estimated to be recognized	2 years 5 months 23 days