Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Schedule of Accounts Receivable

As of March 31, 2019 and December 31, 2018, Accounts receivable consisted of the following:

(in thousands)	March 31, 2019	December 31, 2018
Trade and other accounts receivable	$223,717	$211,244
Bank promissory notes	18,332	19,269
Allowance for doubtful accounts	(7,922)	(7,337)
Accounts receivable, net	$234,127	$223,176

Schedule of Contract Receivables

As of March 31, 2019 and December 31, 2018, Noncurrent receivables consisted of the following:

(in thousands)	March 31, 2019	December 31, 2018
Noncurrent receivables	$45,354	$45,061