Restructuring, Impairment of Long-Lived Assets And Other Charges - Restructuring Reserve (Details) (USD $)	3 Months Ended					6 Months Ended		12 Months Ended
	Jun. 30, 2013		Mar. 31, 2013		Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2011
Restructuring Reserve [Roll Forward]
Balance at beginning of period	$ 2,010,000		$ 1,941,000			$ 1,941,000
Restructuring charges, continuing and discontinued operations	6,490,000	[1]	15,755,000	[1]
Cash payments	(3,245,000)		(1,992,000)
Non-cash items	(3,765,000)		(13,694,000)
Balance at end of period	1,490,000		2,010,000			1,490,000
Restructuring charges, continuing operations	5,947,000				0	17,600,000	0	5,200,000
Employee Severance
Restructuring Reserve [Roll Forward]
Balance at beginning of period	2,010,000		1,913,000			1,913,000
Restructuring charges, continuing and discontinued operations	1,109,000	[1]	2,064,000	[1]
Cash payments	(1,781,000)		(1,967,000)
Non-cash items	(367,000)		0
Balance at end of period	971,000		2,010,000			971,000
Impairment of Long-lived Assets and Other
Restructuring Reserve [Roll Forward]
Balance at beginning of period	0		28,000			28,000
Restructuring charges, continuing and discontinued operations	5,381,000	[1]	13,691,000	[1]
Cash payments	(1,464,000)		(25,000)
Non-cash items	(3,398,000)		(13,694,000)
Balance at end of period	519,000		0			519,000
Impairment of Equipment [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing operations	1,100,000
Impairment of Patents and Technology [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing operations			8,700,000	[1]
Impairment of Investment [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing operations	1,900,000
Disposal of Entity [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing operations	1,500,000
Charlotte and Zhuhai Facilities [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing and discontinued operations	500,000
Zhuhai [Member] | Employee Severance
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing and discontinued operations	200,000
Zhuhai [Member] | Impairment of Equipment [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing and discontinued operations			3,200,000
Zhuhai [Member] | Impairment of Customer Relationships [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing and discontinued operations			675,000
Zhuhai [Member] | Impairment of Patents [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing and discontinued operations			852,000
Charlotte [Member] | Employee Severance
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing and discontinued operations	300,000
Tel Aviv, Israel [Member] | Impairment of Research and Development Equipment
Restructuring Reserve [Roll Forward]
Restructuring charges, continuing operations			$ 300,000

[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).