INCOME TAXES (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Income Taxes [Line Items]
Liability for uncertain tax position that would impact effective tax rate	$ 2,700,000		$ 2,700,000
Uncertain tax positions included in income taxes payable	500,000		500,000
Liability for uncertain tax positions	2,168,000		2,161,000
Prior year liability uncertain tax positions relating to 2007	600,000
Interest and penalties uncertain tax positions recognized	0	0
Accrued interest and penalties uncertain tax positions	200,000		200,000
Deferred tax liability	2,168,000		2,161,000
Increase in income tax benefit	400,000
Fibreco and Gigacom [Member]
Income Taxes [Line Items]
Deferred tax liability	2,100,000		2,200,000
Fibreco [Member]
Income Taxes [Line Items]
Deferred tax liability	100,000
Deferred tax liabilities at the date of acquisition	1,700,000
GigaCom [Member]
Income Taxes [Line Items]
Deferred tax liabilities at the date of acquisition	600,000
TRP [Member]
Income Taxes [Line Items]
Deferred tax assets	$ 2,200,000
U.S. Federal [Member]
Income Taxes [Line Items]
Years not subject to examination by tax authorities	before 2010
State Jurisdiction [Member]
Income Taxes [Line Items]
Years not subject to examination by tax authorities	before 2007
Foreign jurisdictions [Member] | Asia [Member]
Income Taxes [Line Items]
Years not subject to examination by tax authorities	before 2004
Foreign jurisdictions [Member] | Europe [Member]
Income Taxes [Line Items]
Years not subject to examination by tax authorities	before 2006