LOSS FROM EUROPEAN FOUNDRY ARRANGEMENTS Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loss from European foundry supply [Line Items]
(Recovery) impairment of receivable from foundry supplier	$ 485,000	$ 600,000	$ (6,495,000)
Take-or-pay Agreement to Purchase Wafers from a European Foundry [Member]
Loss from European foundry supply [Line Items]
Loss from excess wafer			10,600,000
Loss (gain) from foundry arrangement		7,400,000
Write-off of excess wafer		10,400,000
Write-off a wafer prepayment		1,900,000
Reduction of previously recorded take-or-pay liability		$ (4,900,000)