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REVENUE RECOGNITION - Summary of Significant Changes in the Balances of Contract Liabilities and Assets (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($)
Contract Assets
Balance, beginning of period	$ 93,091
Amount recognized	(6,419)
Increase	11,335
Balance, end of period	98,007
Contract Liabilities
Balance, beginning of period	249,856
Revenue recognized	(17,143)
Increase due to billings	38,691
Balance, end of period	$ 271,404

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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