Receivables, Net (Tables)

6 Months Ended

Jun. 30, 2016

Receivables [Abstract]

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

(in thousands)	June 30, 2016		December 31, 2015		June 30, 2015
Construction contracts:
Completed and in progress	$	266,685	$	206,756	$	229,861
Retentions	95,415		91,670		77,955
Total construction contracts	362,100		298,426		307,816
Construction Material sales	54,277		28,727		49,064
Other	15,227		14,033		5,820
Total gross receivables	431,604		341,186		362,700
Less: allowance for doubtful accounts	477		364		364
Total net receivables	$	431,127	$	340,822	$	362,336

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)	June 30, 2016		December 31, 2015		June 30, 2015
Escrow	$	19,804	$	21,958	$	22,381
Non-escrow	75,611		69,712		55,574
Total retention receivables	$	95,415	$	91,670	$	77,955