Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Summary of Accounts Receivable

(Table only in thousands)	2016			2015
Trade receivables	$	11,976		$	12,800
Contract receivables		72,835			86,129
Allowance for doubtful accounts		(1,749	)		(1,151	)
	$	83,062		$	97,778