Revenues by Product Group (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 25, 2011	Jun. 30, 2012	Jun. 25, 2011
Revenue from External Customer [Line Items]
Revenues	$ 22,848,037	$ 31,430,957	$ 48,095,522	$ 66,365,449
Display
Revenue from External Customer [Line Items]
Revenues	7,012,000	15,425,000	17,878,000	32,798,000
III-V
Revenue from External Customer [Line Items]
Revenues	$ 15,836,000	$ 16,006,000	$ 30,218,000	$ 33,567,000