INCOME TAXES Table 1 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Current:
U.S. federal	$ 0	$ 0	$ 0
U.S. state	(1)	(9)	51
Total current	(1)	(9)	51
Deferred:
U.S. federal	(1,858)	76	(940)
U.S. state	21	(1)	(12)
Total deferred	(1,837)	75	(952)
Total income tax (expense) benefit	$ (1,838)	$ 66	$ (901)