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Deferred Revenue	6 Months Ended
Deferred Revenue	Jun. 30, 2015
Deferred Revenue [Abstract]
Deferred Revenue	8. DEFERRED REVENUE Deferred revenue of $8,133 and $8,034 as of June 30, 2015 and December 31, 2014, respectively, consists of customer payments received for which the revenue recognition criteria have not yet been met as well as billings in excess of costs on percentage of completion projects. Advanced payments from customers typically relate to contracts that the Company has significantly fulfilled its obligations and the customer has paid, but due to the Company’s continuing involvement with the material, revenue is precluded from being recognized until title, ownership, and risk of loss have passed to the customer.