Deferred Revenue	3 Months Ended
Deferred Revenue	Mar. 31, 2013
Deferred Revenue [Abstract]
Deferred Revenue	4. Deferred Revenue As of March 31, 2013 and December 31, 2012, we have $2.0 million and $2.1 million, respectively, of deferred license fee revenue related to prepayments for future license fees from three customers and a total of $0.9 million and $0.6 million, respectively, of deferred engineering development fees from thirteen customers. We defer the license fees until we have met all accounting requirements for revenue recognition as per unit royalty products are distributed or licensed by the Company’s customers and the engineering development fee revenue until such time as the engineering work has been completed and accepted by our customers.

The entire disclosure for deferred revenues at the end of the reporting period, and description and amounts of significant changes that occurred during the reporting period. Deferred revenue is a liability as of the balance sheet date related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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