RECEIVABLES, CONTRACT ASSETS, AND DEFERRED REVENUE (Tables)

6 Months Ended

Jun. 30, 2019

Receivables [Abstract]

Summary of Receivable

Receivables

(in thousands)	June 30, 2019		December 31, 2018
Accounts receivable	$	134,965	$	180,872
Unbilled receivables	169,554		172,656
Long-term unbilled receivables	117,889		151,237
	$	422,408	$	504,765

Summary of Unbilled Receivables

Unbilled receivables are expected to be billed in the future as follows:

(Dollars in thousands)	June 30, 2019
1 year or less	$	169,554	59	%
1-2 years	79,128		28	%
2-5 years	38,761		13	%
	$	287,443	100	%

Summary of Contract Assets and Deferred Revenue

Contract assets and deferred revenue

(in thousands)	June 30, 2019		December 31, 2018
Contract assets (1)	$	3,770	$	3,711
Long-term contract assets (2)	2,190		2,543
	$	5,960	$	6,254

⁽¹⁾ Included in other current assets. ⁽²⁾ Included in other long-term assets.

(in thousands)	June 30, 2019		December 31, 2018
Deferred revenue	$	169,009	$	185,145
Long-term deferred revenue (1)	4,342		5,344
	$	173,351	$	190,489

⁽¹⁾ Included in other long-term liabilities.