Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Summary of Accounts Receivable

(table only in thousands)	March 31, 2019			December 31, 2018
Contract receivables	$	65,453		$	48,826
Trade receivables		10,435			7,296
Allowance for doubtful accounts		(2,925	)		(2,897	)
Total accounts receivable	$	72,963		$	53,225