XML 22 R12.htm IDEA: XBRL DOCUMENT v3.4.0.3
Accounts Receivable
3 Months Ended
Mar. 31, 2016
Accounts Receivable [Abstract]  
ACCOUNTS RECEIVABLE

5. 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, 2016 and December 31, 2015 have been reduced by an allowance for doubtful accounts of $1,450 and $1,485, respectively.