RESTRUCTURING, ROLLFORWARD (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve [Roll Forward]
Accrued restructuring balance, beginning	$ 255	$ 739
Accrual additions	1,212	2,322	$ 2,585
Cash payments	(1,182)	(2,806)	(2,268)
Accrued restructuring balance, ending	285	255	739
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring balance, beginning	162	739
Accrual additions	1,238	2,194
Cash payments	(1,115)	(2,771)
Accrued restructuring balance, ending	285	162	739
Other [Member]
Restructuring Reserve [Roll Forward]
Accrued restructuring balance, beginning	93	0
Accrual additions	(26)	128
Cash payments	(67)	(35)
Accrued restructuring balance, ending	$ 0	$ 93	$ 0