LEASES, COMMITMENTS AND CONTINGENCIES - Schedule of Lease Cost and Other Information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Lease cost
Amortization of ROU assets (included in depreciation and amortization)	$ 406	$ 1,181
Interest on lease liabilities (included in interest expense)	27	80
Operating lease cost (included in general and administrative expense)	789	2,366
Total lease cost	$ 1,222	3,627
Other information
Operating cash outflows from operating leases		2,536
Operating cash outflows from finance leases		80
Financing cash outflows from finance leases		1,368
ROU assets obtained in exchange for new operating lease liabilities		1,218
ROU assets obtained in exchange for new finance lease liabilities		$ 1,350
Weighted-average remaining lease term (years) - operating leases	5 years 2 months 12 days	5 years 2 months 12 days
Weighted-average remaining lease term (years) - finance leases	2 years	2 years
Weighted-average discount rate - operating leases	5.00%	5.00%
Weighted-average discount rate - finance leases	4.00%	4.00%