Property and Equipment, Net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 28,502	$ 25,063
Accumulated depreciation and amortization	(12,502)	(9,811)
Property and equipment, net	16,000	15,252
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,955	7,787
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	12,013	8,674
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,317	6,238
Project expenditures not yet in use [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,217	$ 2,364