Composition of Certain Financial Statement Captions - Summary of Other Current and Noncurrent Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Other Liabilities [Abstract]
Sales returns reserves and other customer liabilities	$ 6,395	$ 7,838
Accrued hosting costs	4,652	4,674
Customer credit balances and deposits	4,260	3,988
Accrued EDI expense	3,511	2,037
Accrued royalties	3,113	3,090
Accrued employee benefits and withholdings	3,002	2,426
Accrued consulting and outside services	2,520	3,874
Accrued outsourcing costs	2,378	2,128
Care services liabilities	2,307	1,443
Accrued legal expense	2,119	699
Accrued self insurance expense	2,054	2,225
Sales tax payable	1,222	509
Contingent consideration related to acquisitions		1,000
Deferred rent and related lease obligations		2,196
Other accrued expenses	3,819	2,937
Other current liabilities	41,352	41,064	$ 48,317
Contingent consideration related to acquisitions	1,900
Uncertain tax positions	1,203	1,677
Deferred rent and related lease obligations		9,927
Other liabilities	178	208
Other noncurrent liabilities	$ 3,281	$ 11,812