Other Assets and Liabilities - Other Non-Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Other Non-Current Assets:
Deferred tax assets, net	$ 21,072	$ 23,029
Long-term deposits	1,477	1,477
Guarantee from Armistice	5,413	5,697
Right of use assets at contract manufacturing organizations	6,561	5,894
Other	50	49
Total	$ 34,573	$ 36,146