LEASES - LESEE ACCOUNTING (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)
Leases [Abstract]
Operating lease expense	$ 600	$ 1,100
Cash paid for amounts included in the measurement of operating lease liabilities		889
ROU assets obtained in exchange for operating lease obligations		$ 341
Weighted average remaining lease term	4 years 2 months 12 days	4 years 2 months 12 days
Weighted average discount rate	4.45%	4.45%
Operating Lease Liabilities, Payments Due [Abstract]
Remainder of 2019	$ 1,052	$ 1,052
2020	1,605	1,605
2021	1,429	1,429
2022	1,321	1,321
2023	1,766	1,766
Total operating lease payments	7,173	7,173
Less: imputed interest	669	669
Total operating lease liabilities	$ 6,504	$ 6,504