OTHER INCOME AND LOSS (Tables)

3 Months Ended

Mar. 31, 2018

Other Income And Expenses [Abstract]

Summary of Other Income and Loss

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

	For the Three Months Ended March 31,
	2018			2017
	(in thousand)
Interest expenses	$	(7,634	)	$	(257	)
Interest income		1,872			186
Amortization of investment discount		1,259			100
Other income		18			306
Gain from sale of Priority Review Voucher		—			125,000
Total other (loss) income	$	(4,485	)	$	125,335