Accounts Receivable and Allowance for Doubtful Accounts

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

Loans, Notes, Trade and Other Receivables Disclosure [Text Block]

Note 4 – Accounts Receivable and Allowance for Doubtful Accounts

Accounts receivable and the allowance for uncollectible accounts are comprised of the following:

(in thousands)	September 30, 2018			December 31, 2017
Accounts receivable	$	112,448		$	103,506
Retainage		28,160			26,070
Allowance for doubtful accounts		(279	)		(233	)
Accounts receivable, net	$	140,329		$	129,343