Property and Equipment (Equipment under Capital Leases) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Capital Leased Assets [Line Items]
Equipment	$ 33,734	$ 35,581
Less: accumulated depreciation and amortization	(19,948)	(18,577)
Net property and equipment	13,786	17,004
Assets Held under Capital Leases
Capital Leased Assets [Line Items]
Equipment	581	408
Less: accumulated depreciation and amortization	(202)	(65)
Net property and equipment	$ 379	$ 343