DEBT - Notes Payable - Summary (Detail) - USD ($) $ in Thousands	12 Months Ended	24 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Debt
Unpaid principal balance	$ 1,204,570	$ 1,204,570
Debt issuance costs	(693)	(693)	$ (1,409)
Carrying balance	293,964	293,964	296,010
Term Loan
Debt
Quarterly equal installments		800
Unpaid principal balance	297,750	297,750	300,000
Unamortized debt discount	(1,245)	(1,245)	(1,466)
Debt issuance costs	(2,541)	(2,541)	(2,524)
Carrying balance	$ 293,964	$ 293,964	$ 296,010
Period for amounts drawn and repaid	60 days