Sale of I/O Technology (Details) (Sale of license of a portion of intellectual property pertaining to high-speed serial I/O technology, USD $)	1 Months Ended		3 Months Ended
	Jul. 31, 2012	Mar. 31, 2012 Item	Mar. 31, 2013
Sale of license of a portion of intellectual property pertaining to high-speed serial I/O technology
Patent Sale and License
Purchase agreement amount		$ 4,300,000
Number of employees of entity's India subsidiary accepted employment in purchaser		15
Cash received upon execution of the agreement, net of transaction costs		2,200,000
Holdback amount		1,900,000	0
Holdback payment received	$ 1,300,000		$ 600,000