DISCONTINUED OPERATIONS (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Oct. 01, 2014	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Discontinued Operations, Disposal [Abstract]
Cash consideration			$ 0	$ 6,830	$ 0
Gain on sale of discontinued operations, net of tax			0	718	0
Discontinued Operations, Income Statement Disclosures [Abstract]
Income (loss) from operations, net of tax			0	(77)	478
Gain on sale of discontinued operations, net of tax			0	718	0
AMK Technical Services [Member]
Discontinued Operations, Disposal [Abstract]
Net proceeds	$ 6,830
Cash consideration	4,330
Secured promissory note receivable	$ 2,500
Secured promissory note receivable, term	90 days
Gain on sale of discontinued operations, net of tax		$ 1,476	0	718	0
Discontinued Operations, Income Statement Disclosures [Abstract]
Net sales			0	4,540	7,513
Income (loss) from operations			0	(76)	719
Tax provision			0	1	241
Income (loss) from operations, net of tax			0	(77)	478
Gain on sale of discontinued operations			0	1,476	0
Tax provision			0	758	0
Gain on sale of discontinued operations, net of tax		$ 1,476	$ 0	$ 718	$ 0