Property and Equipment - Major classifications of property and equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 34,211	$ 29,326
Less: accumulated depreciation	(4,047)	(8,397)
Property and equipment, net	30,164	20,929
Building
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,988	14,988
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,700	3,700
Building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,592
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross		1,123
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,068	4,812
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,863	$ 4,703