Liability Related to Sale of Future Royalties (Tables)

3 Months Ended

Mar. 31, 2018

Schedule of Liability account during the period from the inception of the royalty transaction

The following table shows the activity within the liability account during the three-month period ended March 31, 2018 (in thousands). The cash for the royalties was not received until after the end of the quarter, so accordingly, the change in the liability was solely due to the amortization of the transactions costs discussed above:



	Period from
	December 31, 2017 to
	March 31, 2018
Liability related to sale of future royalties, net — beginning balance	$	169,413
Non-cash interest expense recognized		224
Liability related to sale of future royalties, net — ending balance	$	169,637