Accounts Receivable (Tables)

9 Months Ended

Sep. 30, 2018

Receivables [Abstract]

Schedule of Accounts Receivable

As of September 30, 2018 and December 31, 2017, Accounts receivable consisted of the following:

(in thousands)	September 30, 2018	December 31, 2017
Trade and other accounts receivable	$241,748	$152,375
Bank promissory notes	18,390	20,255
Revenue in excess of progress billings	-	37,964
Allowance for doubtful accounts	(7,674)	(7,919)
Total accounts receivable	$252,464	$202,675

Schedule of Contract Receivables

As of September 30, 2018 and December 31, 2017, Noncurrent receivables consisted of the following:

(in thousands)	September 30, 2018	December 31, 2017
Noncurrent receivables	$41,657	$32,811