RESTATEMENT Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating expenses	$ 5,309	$ 4,746	$ 15,711	$ 14,910
Other losses, net	868	0	868	0
Net loss	(68,469)	1,245	(67,262)	4,238
Operating loss	2,788	$ 2,833	8,441	$ 10,648
Income Tax Provision Corrections | Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating expenses	51		51		$ 51
Other losses, net	713		713		713
Net loss	764		764		$ 764
Appropriate Cutoff Of Transactions Corrections | Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Operating expenses	59		59
Net loss	59		59
Operating loss	$ 59		$ 59