RECEIVABLES, CONTRACT ASSETS, AND DEFERRED REVENUE (Tables)

3 Months Ended

Mar. 31, 2019

Receivables [Abstract]

Summary of Receivable

Receivables

(in thousands)	March 31, 2019		December 31, 2018
Accounts receivable	$	135,352	$	180,872
Unbilled receivables	161,480		172,656
Long-term unbilled receivables	130,494		151,237
	$	427,326	$	504,765

Summary of Unbilled Receivables

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

(Dollars in thousands)	March 31, 2019
1 year or less	$	161,480	55	%
1-2 years	86,496		30	%
2-5 years	43,998		15	%
	$	291,974	100	%

Summary of Contract Assets and Deferred Revenue

Contract assets and deferred revenue

(in thousands)	March 31, 2019		December 31, 2018
Contract assets (1)	$	3,380	$	3,711
Long-term contract assets (2)	1,818		2,543
	$	5,198	$	6,254
Deferred revenue	$	180,845	$	185,145
Long-term deferred revenue (3)	5,866		5,344
	$	186,711	$	190,489

⁽¹⁾ Included in other current assets. ⁽²⁾ Included in other long-term assets. ⁽³⁾ Included in other long-term liabilities.