Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Deferred tax assets (liabilities), noncurrent:
Amortization and impairment of intangible assets	$ 28,304	$ (5,128)
Depreciation of property and equipment	(19,511)	(8,804)
Stock-based compensation	6,258	10,118
Deferred rent	6,809	5,383
Acquisition costs	751	745
Uniform capitalization adjustment to inventory	4,971	5,280
Bad debt and other reserves	15,946	14,163
State taxes	(145)	863
Prepaid expenses	(4,144)	(3,622)
Accrued bonuses	1,456	536
Foreign currency exchange rate hedges	(534)	(94)
Other	1,376	1,196
Net operating loss carry-forwards	3,171	0
Net deferred tax assets	$ 44,708	$ 20,636