Other Assets and Liabilities - Other Non-Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Other Non-Current Assets:
Deferred tax assets	$ 6,464	$ 3,877
Long-term deposits	4,827	3,350
Guarantee from Armistice	5,964	0
Right of use assets at contract manufacturing organizations	4,876	2,909
Other	113	113
Total	$ 22,244	$ 10,249