Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2015

Accounts Receivable.

Summary of accounts receivable

	March 31, 2015		December 31, 2014
Contracts receivable, net of allowance for doubtful accounts of $710 at March 31, 2015 and $540 at December 31, 2014	$	256,199	$	287,806
Retention receivable	42,644		49,104
	298,843		336,910
Other accounts receivable	185		472
	$	299,028	$	337,382