EMPLOYEE BENEFIT PLANS - Narrative (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) Age	Dec. 31, 2015 USD ($)
Compensation and Retirement Disclosure [Abstract]
Service period, minimum	3 months
Employees eligible age under plan, minimum | Age	21
Maximum annual contribution per employee	100.00%
Vesting period of employer's matching contributions	5 years
Contributions by employer	$ 400,000	$ 200,000
Expected employer's contributions in 2017	$ 21,000
Period over which benefits are expected to be paid	10 years