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Sale of I/O Technology (Details) (USD $) | 12 Months Ended | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Jul. 31, 2012 Sale of license of a portion of intellectual property pertaining to high-speed serial I/O technology | Mar. 31, 2012 Sale of license of a portion of intellectual property pertaining to high-speed serial I/O technology Item | Dec. 31, 2012 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 |
Period over which portion of holdback is reserved |  |  |  | 12 months |
Holdback payment received |  |  | 1,300,000 |  |
Gain on asset sale, net of transaction costs | $ 3,291,000 | $ 35,611,000 |  |  | $ 3,300,000

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