Related Parties (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Lite On Semiconductor [Member]
Sales and Purchase Retated Parties [Line Items]
Related Party ownership of common stock	18.00%		18.00%
Percentage of net sales to related party			0.00%	0.00%
Sales from product from related party			3.00%	6.00%
Net sales from related party	$ 274,000	$ 505,000	$ 321,000	$ 952,000
Purchased from related party	9,001,000	9,541,000	16,419,000	18,494,000
Related party receivable or payable [Abstract]
Accounts receivable	264,000		264,000		133,000
Accounts payable	6,594,000		6,594,000		5,106,000
Eris [Member]
Sales and Purchase Retated Parties [Line Items]
Purchased from related party			8,000,000	8,000,000
Related party receivable or payable [Abstract]
Accounts payable	5,491,000		5,491,000		5,832,000
Keylink [Member]
Sales and Purchase Retated Parties [Line Items]
Percentage of net sales to related party			3.00%	0.00%
Sales from product from related party			1.00%	1.00%
Net sales from related party	4,971,000	18,000	9,443,000	1,204,000
Purchased from related party	2,323,000	3,017,000	4,127,000	5,880,000
Related Party Transaction Consulting Fees From Transactions With Related Party			8,000,000	8,000,000
Related party receivable or payable [Abstract]
Accounts receivable	9,557,000		9,557,000		11,237,000
Accounts payable	$ 5,774,000		$ 5,774,000		$ 6,002,000