COMMITMENTS AND CONTINGENCIES COMMITMENTS AND CONTINGENCIES (Leases) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Operating lease, term	9 years 6 months
Balance Sheet Related Disclosures [Abstract]
Right-of-use asset	$ 8,103
Accrued rent	(140)
Right-of-use asset, net	7,963
Lease liability	$ 8,103
Weighted-average discount rate	4.71%
Income Statement Related Disclosures [Abstract]
Lease expense	$ 260
Sublease income	0
Lease expense, net	260
Net cash provided by (used in) operating activities	$ (137)