License Agreements (Tables)

12 Months Ended

Dec. 31, 2017

License Agreements [Abstract]

Summarized Financial Information for MeiraGTx

	2017		2016
Balance Sheet Data:
Cash	$	8,549	$	17,477
Other current assets		2,926		1,613
Noncurrent assets		14,379		3,461
Current liabilities		21,402		6,041
Noncurrent liabilities		479		815
Mezzanine equity		51,410		33,002
Total stockholders’ deficit		(47,437)		(17,308)
Statement of Operations Data:
General and administrative expense	$	9,879	$	6,027
Research and development expense		22,414		14,038
Net loss		(32,717)		(19,792)