Accounts Receivable	3 Months Ended
Accounts Receivable	Mar. 31, 2017
Accounts Receivable [Abstract]
Accounts Receivable	4. ACCOUNTS RECEIVABLE Credit is extended based upon an evaluation of the customer’s financial condition and, while collateral is not required, the Company periodically receives surety bonds that guarantee payment. Credit terms are consistent with industry standards and practices. The amounts of trade accounts receivable at March 31, 2017 and December 31, 2016 have been reduced by an allowance for doubtful accounts of $1,888 and $1,417, respectively.

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.