SEGMENT INFORMATION (Details) (USD $)	3 Months Ended										12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013		Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014 Rate reportable_segment		Dec. 31, 2013 reportable_segment		Dec. 31, 2012 reportable_segment
Industry segment and foreign operations
Number of reportable business segments											2		2		1
Number of primary product groups											2
Financial results of reportable segments
Sales	$ 93,008,000		$ 68,924,000	$ 78,851,000	$ 70,850,000	$ 103,101,000		$ 79,784,000	$ 79,355,000	$ 67,219,000	$ 311,633,000		$ 329,459,000		$ 334,413,000
Depreciation and amortization											9,847,000		9,560,000		7,451,000
Segment (loss) income											(447,000)		6,996,000		20,082,000
Capital expenditures											3,186,000		3,871,000		7,641,000
Segment assets	311,320,000					344,183,000					311,320,000		344,183,000		325,654,000
Reconciliation of segment income to consolidated income before income taxes
Goodwill and Intangible Asset Impairment											(5,766,000)		(6,239,000)		0
(Loss) income from continuing operations before income taxes											(1,125,000)		5,932,000		19,341,000
Maximum amount of sales attributable to a single customer											6.00%
Operating segment
Financial results of reportable segments
Sales											311,633,000		329,459,000		334,413,000
Depreciation and amortization											9,497,000		8,882,000		6,747,000
Segment (loss) income											10,658,000		22,027,000		27,684,000
Capital expenditures											3,186,000		3,871,000		7,641,000
Segment assets	290,300,000	[1]				299,255,000	[1]				290,300,000	[1]	299,255,000	[1]	294,452,000	[1]
Reconciliation of segment income to consolidated income before income taxes
Unallocated corporate expense											(5,540,000)		(4,563,000)		(7,167,000)
Acquisition related inventory step-up charge											86,000		1,927,000		0
Business Combination, Acquisition Related Costs											(178,000)		(2,154,000)		(290,000)
Goodwill and Intangible Asset Impairment											(5,766,000)		(6,239,000)		0
Interest expense, net											678,000		1,064,000		741,000
Other unallocated income (expense)											465,000		(148,000)		(145,000)
(Loss) income from continuing operations before income taxes											(1,125,000)		5,932,000		19,341,000
Operating segment | MMS
Financial results of reportable segments
Sales											243,199,000		278,377,000		306,328,000
Depreciation and amortization											6,952,000		6,897,000		6,041,000
Segment (loss) income											3,950,000		16,338,000		22,556,000
Capital expenditures											2,088,000		2,603,000		7,005,000
Segment assets	238,462,000	[1]				253,173,000	[1]				238,462,000	[1]	253,173,000	[1]	276,710,000	[1]
Operating segment | ATA
Financial results of reportable segments
Sales											68,788,000		51,553,000		28,989,000
Depreciation and amortization											2,545,000		1,985,000		706,000
Segment (loss) income											6,708,000		5,689,000		5,128,000
Capital expenditures											1,098,000		1,268,000		636,000
Segment assets	51,838,000	[1]				46,082,000	[1]				51,838,000	[1]	46,082,000	[1]	17,742,000	[1]
Inter-Segment Eliminations
Financial results of reportable segments
Sales											(354,000)		(471,000)		(904,000)
Unallocated assets
Financial results of reportable segments
Segment assets	21,020,000					44,928,000					21,020,000		44,928,000		31,202,000
Reconciliation of segment income to consolidated income before income taxes
Cash	16,300,000					34,700,000					16,300,000		34,700,000		26,855,000
Minimum | MMS
Reconciliation of segment income to consolidated income before income taxes
Average selling price											40,000
Minimum | ATA
Reconciliation of segment income to consolidated income before income taxes
Average selling price											50
Maximum | MMS
Reconciliation of segment income to consolidated income before income taxes
Average selling price											2,000,000
Maximum | ATA
Reconciliation of segment income to consolidated income before income taxes
Average selling price											$ 20,000

[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.