Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2018

Receivables [Abstract]

Summary of Accounts Receivable

Accounts receivable at December 31 consists of:

(In thousands)	2018		2017
Trade Accounts Receivable	$	150,764	$	114,461
Unbilled Recoverable Costs and Accrued Profits	33,030		19,132
Total Receivables, Gross	183,794		133,593
Less Allowance for Doubtful Accounts	(1,486)		(960)
Total Receivables, Net	$	182,308	$	132,633