Accounts Receivable, Unbilled Services and Deferred Revenue - Allowance for Credit Loss Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2024	Jul. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Accounts receivable, allowance for credit loss, beginning balance	$ 1,301	$ 825
Plus: Provision for credit losses and bad debt	0
Less: Reversals for amounts subsequently collected	(71)	$ 162
Less: Write offs	0
Accounts receivable, allowance for credit loss, ending balance	$ 1,230