Composition of Certain Financial Statement Captions - Summary of Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Mar. 31, 2019
Other Liabilities Current [Abstract]
Care services liabilities	$ 7,501	$ 1,443
Sales returns reserves and other customer liabilities	6,743	7,838
Customer credit balances and deposits	4,358	3,988
Accrued hosting costs	3,440	4,674
Accrued self insurance expense	2,616	2,225
Accrued employee benefits and withholdings	2,407	2,426
Accrued outsourcing costs	2,328	2,128
Accrued EDI expense	2,061	2,037
User group meeting deposits	1,813
Accrued consulting and outside services	1,732	3,874
Contingent consideration related to acquisitions	1,400	1,000
Accrued legal expense	895	699
Sales tax payable	599	509
Accrued royalties	587	3,090
Deferred rent and related lease obligations		2,196
Other accrued expenses	3,065	2,937
Other current liabilities	$ 41,545	$ 41,064