Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

Summary of Accounts Receivable

(Table only in thousands)	September 30, 2018			December 31, 2017
Contract receivables	$	62,787		$	60,543
Trade receivables		7,900			11,603
Allowance for doubtful accounts		(2,883	)		(4,156	)
Total accounts receivable	$	67,804		$	67,990