Composition of Certain Financial Statement Captions - Summary of Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Mar. 31, 2020
Other Liabilities [Abstract]
Sales returns reserves and other customer liabilities	$ 9,267	$ 6,395
Accrued employee benefits and withholdings	7,891	3,002
Accrued hosting costs	7,468	4,652
Care services liabilities	4,208	2,307
Customer credit balances and deposits	4,001	4,260
Accrued legal expense	2,820	2,119
Accrued outsourcing costs	2,112	2,378
Accrued EDI expense	1,978	3,511
Contingent consideration related to acquisitions	1,975
Accrued consulting and outside services	1,959	2,520
Accrued self insurance expense	1,870	2,054
Accrued royalties	982	3,113
Accrued taxes payable	726	1,222
Other accrued expenses	3,847	3,819
Other current liabilities	51,104	41,352
Deferred payroll taxes	3,817
Uncertain tax positions	1,203	1,203
Contingent consideration related to acquisitions		1,900
Other liabilities	211	178
Other noncurrent liabilities	$ 5,231	$ 3,281