Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2013

Accounts Receivable

Summary of accounts receivable

	June 30, 2013		December 31, 2012
Contracts receivable, net of allowance for doubtful accounts of $ 497 for June 30, 2013 and $432 for December 31, 2012	$	211,184	$	227,548
Retention	39,826		39,710
	251,010		267,258
Other accounts receivable	82		837
	$	251,092	$	268,095