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Deferred Costs
12 Months Ended
Dec. 31, 2015
Inventories [Abstract]  
Inventory Disclosure [Text Block]
Deferred Costs
 
Deferred costs representing work in process for costs incurred on process development contracts that have not been completed, were $2.9 million and $2.6 million as of December 31, 2015 and December 31, 2014, respectively. The Company also has deferred revenue of approximately $4.9 million and $3.9 million of progress billings received as of December 31, 2015 and December 31, 2014, respectively, related to these contracts.