Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

The following tables set forth the fair value of the Company’s financial instruments (in millions):

	June 30, 2018
	Carrying Amount		Significant Unobservable Inputs (Level 3)		Fair Value
Financial liabilities:
Senior convertible notes (2021 notes)	$	19.2	$	15.3	$	15.3
Facility financing obligation		38.0		43.2		43.2
Note payable to related party		72.2		65.7		65.7
Milestone rights		8.8		18.4		18.4
Total financial liabilities	$	138.2	$	142.6	$	142.6

	December 31, 2017
	Carrying Value		Significant Unobservable Inputs (Level 3)		Fair Value
Financial liabilities:
Senior convertible notes (2021 notes)	$	24.4	$	19.8	$	19.8
Facility financing obligation		52.7		54.6		54.6
Milestone rights		8.8		19.1		19.1
Total financial liabilities	$	85.9	$	93.5	$	93.5