Revenue Recognition

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

8. Revenue Recognition

Revenue is recognized when persuasive evidence of an arrangement exists, services have been rendered, the contract price is fixed or determinable and collectability is reasonably assured.  Royalty revenue is based upon our licensees’ net sales of covered products and recognized in the respective period.  On time and expense contracts revenue is recognized at contractually agreed-upon rates based upon direct labor hours expended and other direct costs incurred.  Revenue for fixed-price contracts is recognized under the proportional performance method based upon labor charged in relation to total expected labor charges.  Losses, if any, on contracts are recorded during the period when first determined.