INCOME TAXES (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Line Items]
Liability for uncertain tax position that would impact effective tax rate	$ 2,200,000	$ 2,700,000
Liabilities for uncertain tax positions included in income tax payable	1,000,000	500,000
Liability for uncertain tax positions	1,200,000	2,200,000
Years tax audit notified by IRS	December 31, 2004 through 2009
IRS audit settlement	100,000
Prior year liability uncertain tax positions relating to 2010	1,000,000
Decreases resulting from prior period tax positions	(500,000)	(2,600,000)
Increase in the liability for uncertain tax positions	28,000	1,221,000	297,000
Reconciliation of beginning and ending amount of liability for uncertain tax positions [Roll Forward]
Liability for uncertain tax positions - January 1	2,711,000	4,132,000	3,835,000
Additions based on tax positions related to the current year	28,000	1,221,000	297,000
Settlement/expiration of statutes of limitations	(550,000)	(2,642,000)	0
Liability for uncertain tax positions - December 31	2,189,000	2,711,000	4,132,000
Interest and penalties uncertain tax positions recognized	0	(500,000)	200,000
Accrued interest and penalties uncertain tax positions	200,000	200,000
Earnings (loss) before provision (benefit) for income taxes included earnings from domestic operations	(1,200,000)	400,000	9,600,000
Earnings (loss) from foreign operations	16,300,000	600,000	(1,700,000)
Current [Abstract]
Federal	(1,099,000)	(459,000)	2,585,000
Foreign	1,120,000	241,000	478,000
State	113,000	76,000	362,000
Total	134,000	(142,000)	3,425,000
Deferred [Abstract]
Federal	(865,000)	(807,000)	599,000
State	65,000	(58,000)	102,000
Foreign	(77,000)	(369,000)	(18,000)
Total	(877,000)	(1,234,000)	683,000
Tax (benefit) provision computed at the Company's effective tax rate	(743,000)	(1,376,000)	4,108,000
Reconciliation of taxes on income computed at the federal statutory rate [Abstract]
Tax provision computed at the federal statutory rate	5,309,000	339,000	2,676,000
Increase (decrease) in taxes resulting from [Abstract]
Different tax rates and permanent differences applicable to foreign operations	(4,677,000)	(306,000)	1,526,000
Increase in (reversal of) liability for uncertain tax positions - net	(522,000)	(1,421,000)	297,000
Utilization of research and development, solar and foreign tax credits	(1,049,000)	0	(762,000)
State taxes, net of federal benefit	117,000	0	341,000
Current year valuation allowance - U.S. segment	49,000	298,000	0
Permanent differences applicable to U.S. operations, including qualified production activity credits, SERP/COLI income, unrealized foreign exchange gains and amortization of purchase accounting intangibles	(91,000)	(260,000)	44,000
Other	121,000	(26,000)	(14,000)
Tax (benefit) provision computed at the Company's effective tax rate	(743,000)	(1,376,000)	4,108,000
Increase (decrease) in effective tax rate resulting from [Abstract]
Tax provision computed at the federal statutory rate (in hundredths)	35.00%	34.00%	34.00%
Different tax rates and permanent differences applicable to foreign operations (in hundredths)	(31.00%)	(31.00%)	19.00%
Increase in (reversal of) liability for uncertain tax positions - net (in hundredths)	(3.00%)	(143.00%)	4.00%
Utilization of research and development, solar and foreign tax credits (in hundredths)	(7.00%)	0.00%	(10.00%)
State taxes, net of federal benefit (in hundredths)	1.00%	0.00%	4.00%
Current year valuation allowance - U.S. segment (in hundredths)	0.00%	30.00%	0.00%
Permanent differences applicable to U.S. operations, including qualified production activity credits, SERP/COLI income, unrealized foreign exchange gains and amortization of purchase accounting intangibles (in hundredths)	(1.00%)	(26.00%)	1.00%
Other (in hundredths)	1.00%	(3.00%)	0.00%
Tax (benefit) provision computed at the Company's effective tax rate (in hundredths)	(5.00%)	(138.00%)	52.00%
Macao corporate profit tax rate (in hundredths)	12.00%
PRC income tax rate (in hundredths)	25.00%
Deferred tax assets, operating loss carryforwards	3,844,000	1,114,000
Tax credit carryforward, valuation allowance	1,200,000
Liability for uncertain tax positions	1,218,000	2,161,000
Unrepatriated foreign earnings	109,000,000
Estimated federal income tax liability related to unrepatriated foreign earnings	26,000,000
Deferred Tax Assets - current [Abstract]
State tax credits	915,000	848,000
Reserves and accruals	2,020,000	1,334,000
Federal net operating loss carryforward	790,000	0
Other accruals	86,000	0
Valuation allowance	(816,000)	(745,000)
Deferred income tax assets - current	2,995,000	1,437,000
Deferred Tax Assets - noncurrent [Abstract]
Unfunded pension liability	668,000	1,150,000
Depreciation	(83,000)	(426,000)
Amortization	(4,065,000)	(2,457,000)
Federal, state and foreign net operating loss and credit carryforwards	3,844,000	1,114,000
Restructuring expenses	0	319,000
Other accruals	2,455,000	2,438,000
Valuation allowances	(1,139,000)	(1,129,000)
Deferred income tax assets - noncurrent	1,680,000	1,009,000
Fibreco, GigaCom and Powerbox [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Deferred tax liability	2,400,000
Fibreco [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Deferred tax liability	100,000
Deferred tax liabilities at the date of acquisition	1,700,000
GigaCom [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Deferred tax liabilities at the date of acquisition	600,000
TRP and Array [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Deferred tax asset	2,000,000
TRP [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Deferred tax asset	2,200,000
Deferred tax liabilities at the date of acquisition	600,000
Array [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Operating loss carryforwards	5,400,000
Deferred tax assets, operating loss carryforwards	3,200,000
Deferred tax liability	700,000
Deferred tax asset	900,000
Deferred tax liabilities at the date of acquisition	1,000,000
Deferred Tax Assets - noncurrent [Abstract]
Federal, state and foreign net operating loss and credit carryforwards	3,200,000
Powerbox [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Deferred tax liabilities at the date of acquisition	400,000
Germany [Member]
Income Taxes [Line Items]
Income tax audit, years under examination	2008 through 2010
U.S. Federal [Member]
Income Taxes [Line Items]
Years not subject to examination by tax authorities	before 2010
Federal and State Jurisdiction [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Operating loss carryforwards	10,700,000
State Jurisdiction [Member]
Income Taxes [Line Items]
Years not subject to examination by tax authorities	before 2007
Increase (decrease) in effective tax rate resulting from [Abstract]
Operating loss carryforwards, valuation allowance	200,000
Capital loss carryforwards	1,000,000
Deferred tax assets, deferred tax assets	300,000
Capital loss carryforward, valuation allowance	300,000
Tax credit carryforward	2,200,000
Deferred tax assets, tax credit carryforward	1,200,000
Foreign Jurisdictions [Member]
Increase (decrease) in effective tax rate resulting from [Abstract]
Operating loss carryforwards	2,700,000
Operating loss carryforwards, valuation allowance	600,000
Capital loss carryforwards	$ 200,000
Foreign Jurisdictions [Member] | Asia [Member]
Income Taxes [Line Items]
Years not subject to examination by tax authorities	before 2006
Foreign Jurisdictions [Member] | Europe [Member]
Income Taxes [Line Items]
Years not subject to examination by tax authorities	before 2006