Other Assets and Liabilities - Other Non-Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Other Non-Current Assets:
Deferred tax assets	$ 8,113	$ 3,877
Long-term deposits	4,827	3,350
Guarantee from Armistice	5,830	0
Right of use assets at contract manufacturing organizations	5,960	2,909
Other	114	113
Total	$ 24,844	$ 10,249