FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2019

Financial Instruments, Owned, at Fair Value [Abstract]

Carrying Amount and Estimated Fair Values of the Term Loan Facility and Notes

The carrying value and estimated fair value of the forward contracts for the issuance of convertible preferred stock, the Term Loan Facility, net of discount, Notes (net of the equity component classified in stockholders' equity and discount) and the interest rate swaps were as follows:

	December 31, 2019				December 31, 2018
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Assets:
Forward contracts for the issuance of convertible preferred stock	$	—	$	—	$	88,942	$	88,942
Liabilities:
Tranche B-1 Term Loan	$	—	$	—	$	147,289	$	145,080
Tranche B-2 Term Loan	441,500		414,321		554,760		511,766
FILO Term Loan	266,814		265,851		264,086		260,125
Notes	154,675		148,488		175,504		131,628
Interest rate swaps	6,940		6,940		3,210		3,210