Composition of Certain Financial Statement Captions - Summary of Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019
Other Liabilities Current [Abstract]
Care services liabilities	$ 8,183	$ 1,443
Sales returns reserves and other customer liabilities	7,234	7,838
Customer credit balances and deposits	3,865	3,988
Accrued hosting costs	3,234	4,674
Accrued employee benefits and withholdings	2,795	2,426
Accrued consulting and outside services	2,635	3,874
Accrued self insurance expense	2,604	2,225
Accrued outsourcing costs	2,194	2,128
Accrued EDI expense	1,944	2,037
Contingent consideration and other liabilities related to acquisitions	1,000	1,000
Accrued royalties	657	3,090
Sales tax payable	641	509
Accrued legal expense	551	699
Deferred rent and related lease obligations		2,196
Other accrued expenses	3,875	2,937
Other current liabilities	$ 41,412	$ 41,064