Deferred Revenue	6 Months Ended
Deferred Revenue	Jun. 30, 2012
Deferred Revenue Disclosure [Abstract]
Deferred Revenue	6. Deferred Revenue Engineering development fees are recorded as deferred revenue until such time as the engineering services have been provided. As of June 30, 2012 and December 31, 2011, we have $1.4 million and $1.5 million, respectively, of deferred license fee revenue related to a prepayment for future license fees from one customer and a total of $0.1 million and $0.4 million, respectively, of deferred engineering development fees from four and four customers, respectively. We are deferring the engineering development fee revenue until such time as the engineering work has been completed.

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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