Restructuring, Impairment of Long-Lived Assets And Other Charges - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended	1 Months Ended	6 Months Ended	3 Months Ended			6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2011	Jan. 31, 2011 Maximum	Jun. 30, 2013 DigitalOptics Business Strategy	Dec. 31, 2012 DigitalOptics MEMS Business	Mar. 31, 2013 Impairment of Patents and Technology [Member]		Jun. 30, 2013 Impairment of Patents and Technology [Member] DigitalOptics Business Strategy		Jun. 30, 2013 Impairment of Equipment [Member]	Jun. 30, 2013 Impairment of Equipment [Member] DigitalOptics Business Strategy	Jun. 30, 2013 Employee Severance DigitalOptics Business Strategy	Jun. 30, 2013 Impairment of Investment [Member]	Jun. 30, 2013 Impairment of Investment [Member] DigitalOptics Business Strategy	Jun. 30, 2013 Disposal of Entity [Member]	Jun. 30, 2013 Disposal of Entity [Member] DigitalOptics Business Strategy
Restructuring Cost and Reserve [Line Items]
Restructuring charges, continuing operations	$ 5,947	$ 0	$ 17,600	$ 0	$ 5,200		$ 17,600	$ 2,500	$ 8,700	[1]	$ 8,700	[1]	$ 1,100	$ 2,400	$ 1,900	$ 1,900	$ 1,900	$ 1,500	$ 1,500
Reduction in employee base						15.00%

[1] Impairment of long-lived assets and other of $13.7 million in the three months ended March 31, 2013 included an impairment charge of $3.2 million in manufacturing equipment assets held for sale resulting from the closure of the Zhuhai Facility, impairment of $675,000 relating to customer relationships and $852,000 relating to patents acquired from the Zhuhai Transaction, and $0.3 million impairment of research and development equipment relating to the closure of the facility in Tel Aviv, Israel, and an $8.7 million charge due to the abandonment of patents and technology which caused a revision of the useful life estimate of these patents and technology assets thus fully impairing them (see Note 8 – "Goodwill and Identified Intangibles Assets" for more information about the accelerated amortization of existing technology).