EMPLOYEE BENEFIT PLAN (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Retirement Benefits [Abstract]
Employee minimum service period	6 months
Employee maximum annual contribution	$ 15,000
Annual vesting percentage of company contributions	25.00%
Vesting term	5 years
Employer match percentage of employee contribution	20.00%
Maximum annual match, percentage of gross salary	10.00%
Plan expense	$ 200,000	$ 200,000	$ 200,000