Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Deferred tax assets (liabilities), current
Uniform capitalization adjustment to inventory	$ 0	$ 4,040
Bad debt and other reserves	0	8,984
State taxes	0	482
Prepaid expenses	0	(3,546)
Accrued bonus	0	4,120
Foreign currency hedge	0	(434)
Other	0	(448)
Total deferred tax assets, current	0	14,066
Deferred tax assets (liabilities), noncurrent:
Amortization and impairment of intangible assets	(5,128)	1,004
Depreciation of property and equipment	(8,804)	(6,148)
Share-based compensation	10,118	12,044
Foreign currency translation	151	720
Deferred rent	5,383	4,885
Acquisition costs	745	764
Uniform capitalization adjustment to inventory	5,280
Bad debt and other reserves	14,163
State taxes	863
Prepaid expenses	(3,622)
Accrued bonus	536
Foreign currency hedge	(94)
Other	1,045	1,327
Net operating loss carryforwards	0	421
Total deferred tax assets, noncurrent	20,636	15,017
Net deferred tax assets, noncurrent	$ 20,636	$ 29,083