Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2013

Accounts Receivable

Summary of accounts receivable

	September 30, 2013		December 31, 2012
Contracts receivable, net of allowance for doubtful accounts of $535 at September 30, 2013 and $432 at December 31, 2012	$	235,302	$	227,548
Retention	48,768		39,710
	284,070		267,258
Other accounts receivable	427		837
	$	284,497	$	268,095