Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2013

Accounts Receivable

Summary of accounts receivable

	March 31, 2013		December 31, 2012
Contracts receivable, net of allowance for doubtful accounts of $456 for March 31, 2013 and $432 for December 31, 2012	$	207,442	$	227,548
Retention	41,834		39,710
	249,276		267,258
Other accounts receivable	345		837
	$	249,621	$	268,095