STOCK-BASED COMPENSATION - Restricted Stock Unit Outstanding Activity (Details) - Restricted Stock Units (RSUs) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Nonvested Outstanding
Units Outstanding, beginning balance	265,913
Awards granted (in shares)	2,422
Units released	(432)
Units Outstanding, ending balance	267,903
Units Outstanding, vested and expected to vest end of period, units outstanding	266,858
Vested and deferred at the end of the period, units outstanding	256,294
Weighted Average Grant Date Fair Value
Units Outstanding, beginning balance	$ 12.56
Awards granted (in dollars per share)	19.58
Units released	15.11
Units Outstanding, ending balance	12.62
Weighted Average Grant Date Fair Value, vested and expected to vest end of period	12.60
Weighted Average Grant Date Fair Value, vested and deferred end of period	$ 12.22
Aggregate Intrinsic Value
Awards outstanding at Balance Sheet date	$ 3,756,000	$ 4,823,662
Vested and expected to vest at the end of the period	3,741,344
Vested and deferred at the end of the period	$ 3,593,242