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RECEIVABLES, CONTRACT ASSETS, AND DEFERRED REVENUE (Tables)

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Summary of Accounts Receivable and Unbilled Receivable

Receivables


(in thousands)			December 31, 2020						December 31, 2019
Accounts receivable			$	215,827					$	199,720
Unbilled receivables			207,155						180,219
Long-term unbilled receivables			113,278						121,736
			$	536,260					$	501,675

Summary of Unbilled Receivables

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


(Dollars in thousands)			December 31, 2020
1 year or less			$	207,155		65		%
1-2 years			83,992			26		%
2-5 years			29,286			9		%
			$	320,433		100		%

Summary of Unbilled Receivables Based Upon Contract Effective Date

Unbilled receivables based upon contract effective date:


(Dollars in thousands)			December 31, 2020
2020			$	149,867		47		%
2019			87,941			27		%
2018			31,097			10		%
2017			31,668			10		%
2016 and prior			19,860			6		%
			$	320,433		100		%

Summary of Contract Assets and Deferred Revenue

Contract assets and deferred revenue


(in thousands)			December 31, 2020						December 31, 2019
Contract assets (1)			$	15,296					$	5,558
Long-term contract assets (2)			7,777						5,420
			$	23,073					$	10,978
Deferred revenue			$	232,865					$	190,080
Long-term deferred revenue (3)			8,991						5,407
			$	241,856					$	195,487

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