OTHER (LOSS) INCOME (Tables)

9 Months Ended

Sep. 30, 2021

Other Income And Expenses [Abstract]

Summary of Other (Loss) Income

The following table summarizes other (loss) income for the periods indicated:

		For the Three Months Ended September 30,						For the Nine Months Ended September 30,
		2021			2020			2021			2020
	(in thousands)
Interest expense		$	(15,995	)	$	(13,889	)	$	(47,477	)	$	(41,217	)
Interest income			148			122			259			2,899
Amortization of investment discount			—			313			157			4,276
Gain from sale of Priority Review    Voucher			—			—			102,000			108,069
Gain (loss) on contingent consideration,    net*			7,200			(45,000	)		7,200			(45,000	)
Impairment of equity investment			(4,488	)		—			(4,488	)		—
Other expense, net			(314	)		(881	)		(813	)		(160	)
Total other (loss) income		$	(13,449	)	$	(59,335	)	$	56,838		$	28,867

* The gain (loss) on contingent consideration, net is related to the fair value adjustment of the regulatory-related contingent payments that are accounted for as derivatives. Please see Note 5, Fair Value Measurements for further details.