Service Revenue (Narrative) (Details) - USD ($)	9 Months Ended
	Feb. 28, 2023	Feb. 28, 2022
Service Revenue [Line Items]
Notice of termination period	30 days
Revenue performance obligations timing	the Company defers revenue associated with these performance obligations, which exceed one year, and subsequently recognizes them as future services are provided, over approximately three to four years
Impairment loss	$ 0	$ 0
Revenue performance obligations	$ 58,500,000
Minimum [Member]
Service Revenue [Line Items]
Revenue performance obligations timing, years	3 years
Maximum [Member]
Service Revenue [Line Items]
Revenue performance obligations timing, years	4 years