INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended										9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Fibreco and Gigacom [Member]	Dec. 31, 2012 Fibreco and Gigacom [Member]	Sep. 30, 2013 Fibreco [Member]	Sep. 30, 2013 GigaCom [Member]	Sep. 30, 2013 TRP [Member]	Sep. 30, 2013 Bel Power Europe [Member]	Sep. 30, 2013 Array [Member]	Sep. 30, 2013 U.S. Federal [Member]	Sep. 30, 2013 State Jurisdiction [Member]	Sep. 30, 2013 Foreign jurisdictions [Member] Asia [Member]	Sep. 30, 2013 Foreign jurisdictions [Member] Europe [Member]
Income Taxes [Line Items]
Liability for uncertain tax position that would impact effective tax rate	$ 2.2		$ 2.7
Uncertain tax positions included in income taxes payable	1.0		0.5
Liability for uncertain tax positions	1.2		2.2
Years not subject to examination by tax authorities											before 2010	before 2007	before 2004	before 2006
Prior year liability uncertain tax positions relating to 2008	1.0
Reversal of Prior Year Liability Uncertain Tax Positions	0.5	2.5
Accrued interest and penalties uncertain tax positions	0.2		0.2
Deferred tax liability	0.1
Deferred tax liabilities at the date of acquisition						1.7	0.6		0.4
Deferred tax liability				2.4	2.2					0.9
Deferred tax assets								2.2
Increase in income tax benefit	0.4
Increase in liability for uncertain tax positions		$ 1.2