Receivables, Net (Tables)

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

Receivables, net (in thousands)

December 31,	2016		2015
Construction contracts:
Completed and in progress	$	288,160	$	206,756
Retentions	84,878		91,670
Total construction contracts	373,038		298,426
Construction material sales	29,357		28,727
Other	17,523		14,033
Total gross receivables	419,918		341,186
Less: allowance for doubtful accounts	573		364
Total net receivables	$	419,345	$	340,822