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Deferred Costs	9 Months Ended
Deferred Costs	Sep. 30, 2015
Inventories [Abstract]
Deferred Costs	Deferred costs, representing work in process for costs incurred on process development contracts that have not been completed, were $3.3 million and $2.6 million as of September 30, 2015 and December 31, 2014, respectively. The Company also has deferred revenue of approximately $4.9 million and $3.9 million of advance billings received as of September 30, 2015 and December 31, 2014, respectively, related to these contracts.