Summary of Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw material	$ 10,733	$ 11,392	$ 10,940
Work-in-process	14,165	17,745	13,244
Finished goods	81,600	43,885	42,895
Inventory, net	$ 106,498	$ 73,022	$ 67,079