Debt (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of future principal payments

The Company’s future principal payments under the mortgage loan are as follows (in thousands):

	Total		Less Than 1 Year		1-3 Years		3 - 5 Years		More than 5 Years
Debt obligations	$	380	$	195	$	185	$	—	$	—