CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS (Details 2) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reclassification out of AOCI
Sales	$ 86,960	$ 76,805	$ 82,356	$ 69,128	$ 93,008	$ 68,924	$ 78,851	$ 70,850	$ 315,249	$ 311,633	$ 329,459
Other expense, net									(632)	(514)	(471)
Income (loss) from continuing operations before income taxes									4,438	(1,125)	5,932
Income taxes									(1,828)	(1,233)	(1,537)
Net income (loss)	$ 2,759	$ (327)	$ 1,586	$ (1,408)	$ 4,542	$ (7,578)	$ 1,349	$ (453)	2,610	(2,140)	9,927
Unrealized gain (loss) on cash flow hedges | Amount reclassified from AOCI
Reclassification out of AOCI
Sales									(120)	43	20
Other expense, net									(92)	106	(14)
Income (loss) from continuing operations before income taxes									(212)	149	6
Income taxes									36	(8)	(1)
Net income (loss)									(176)	141	5
Retirement plans related adjustments | Amount reclassified from AOCI
Reclassification out of AOCI
Amortization of prior service credit									318	399	647
Amortization of transition asset									(258)	(276)	(272)
Amortization of actuarial loss									3,238	2,063	3,447
Income (loss) from continuing operations before income taxes									(2,662)	(1,388)	(2,528)
Income taxes									187	65	221
Net income (loss)									$ (2,475)	$ (1,323)	$ (2,307)