Receivables, Net (Tables)

9 Months Ended

Sep. 30, 2016

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

(in thousands)	September 30, 2016		December 31, 2015		September 30, 2015
Construction contracts:
Completed and in progress	$	347,320	$	206,756	$	300,188
Retentions	97,385		91,670		82,344
Total construction contracts	444,705		298,426		382,532
Construction Material sales	50,768		28,727		68,449
Other	17,760		14,033		5,979
Total gross receivables	513,233		341,186		456,960
Less: allowance for doubtful accounts	481		364		272
Total net receivables	$	512,752	$	340,822	$	456,688

Schedule Of Escrow and Non Escrow Retention Receivable [Table Text Block]

We segregate our retention receivables into two categories: escrow and non-escrow. The balances in each category were as follows:

(in thousands)	September 30, 2016		December 31, 2015		September 30, 2015
Escrow	$	18,797	$	21,958	$	21,590
Non-escrow	78,588		69,712		60,754
Total retention receivables	$	97,385	$	91,670	$	82,344