SEGMENT INFORMATION (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Financial results of reportable segments
Sales	$ 69,128,000		$ 70,850,000
Depreciation and amortization	2,338,000		2,531,000
Segment (loss) income	(1,417,000)		(291,000)
Capital expenditures	699,000		325,000
Segment assets	313,100,000				311,320,000
Reconciliation of segment income to consolidated income before income taxes
Loss from continuing operations before income taxes	(1,557,000)		(514,000)
Operating segment
Financial results of reportable segments
Sales	69,128,000		70,850,000
Depreciation and amortization	2,224,000		2,416,000
Segment (loss) income	288,000		1,166,000
Capital expenditures	699,000		325,000
Segment assets	290,374,000	[1]	295,032,000	[1]	290,300,000
Reconciliation of segment income to consolidated income before income taxes
Unallocated corporate expense	(1,704,000)		(1,457,000)
Interest expense, net	140,000		223,000
Other unallocated income (expense)	(1,000)		0
Loss from continuing operations before income taxes	(1,557,000)		(514,000)
Operating segment | MMS
Financial results of reportable segments
Sales	52,976,000		54,189,000
Depreciation and amortization	1,624,000		1,777,000
Segment (loss) income	(909,000)		(642,000)
Capital expenditures	306,000		258,000
Segment assets	236,762,000	[1]	243,491,000	[1]
Operating segment | ATA
Financial results of reportable segments
Sales	16,227,000		16,733,000
Depreciation and amortization	600,000		639,000
Segment (loss) income	1,197,000		1,808,000
Capital expenditures	393,000		67,000
Segment assets	53,612,000	[1]	51,541,000	[1]
Inter-Segment Eliminations
Financial results of reportable segments
Sales	(75,000)		(72,000)
Unallocated assets
Financial results of reportable segments
Segment assets	22,726,000				21,020,000
Reconciliation of segment income to consolidated income before income taxes
Cash	$ 18,300,000				$ 16,300,000

[1] Segment assets primarily consist of restricted cash, accounts receivable, inventories, prepaid and other assets, property, plant and equipment, and intangible assets. Unallocated assets primarily include, cash and cash equivalents, corporate property, plant and equipment, deferred income taxes, and other non-current assets.