Deferred Revenues

12 Months Ended

Dec. 31, 2014

Deferred Revenues [Abstract]

Deferred Revenues

7.   Deferred Revenues

We defer the license fees until we have met all accounting requirements for revenue recognition as per unit royalty products are distributed and royalty reports are received. Engineering development fee revenues are deferred until such time as the engineering work has been completed and accepted by our customers. As of December 31, 2014 and 2013, we had $3.0 million and $2.5 million, respectively, of deferred license fee revenue related to prepayments for future license fees from five and three customers, respectively, and a total of $0.4 million and $1.2 million, respectively, of deferred engineering development fees from five and twenty-one customers, respectively.