Stockholders' Equity - Narrative (Details)			12 Months Ended
	Nov. 03, 2022 shares	Oct. 29, 2014 vote $ / shares shares	May 31, 2023 USD ($) working_hour Employees $ / shares shares	May 31, 2022 USD ($) $ / shares shares	May 31, 2021 USD ($) $ / shares shares	May 31, 2020 shares	May 31, 2018 shares
Other Ownership Interests [Line Items]
Authorized capital stock (shares)		80,000,000
Shares of common stock (shares)		75,000,000	75,000,000	75,000,000
Common stock, par value (usd per share) | $ / shares		$ 0.01	$ 0.01	$ 0.01
Preferred stock, shares authorized (shares)		5,000,000	5,000,000	5,000,000
Preferred stock, par value (usd per share) | $ / shares		$ 0.01	$ 0.01	$ 0.01
Common stock, votes per share | vote		1
Option grants in the period, weighted average grant date fair value (usd per share) | $ / shares			$ 9.27	$ 9.57	$ 3.97
Risk free interest rate			3.20%	0.92%	0.34%
Expected volatility rate			44.00%	41.00%	39.00%
Expected term			5 years 1 month 20 days	5 years 18 days	4 years 11 months 15 days
The total intrinsic value of options exercised | $			$ 200,000	$ 1,600,000	$ 800,000
Compensation not yet recognized | $			3,900,000
Proceeds from stock options exercised | $			300,000	2,700,000	1,900,000
Tax benefit | $			$ 2,600,000	$ 2,500,000	$ 2,000,000
Grants in the period, weighted average grant date fair value (usd per share) | $ / shares				$ 26.24	$ 10.40
Average price of share issued | $ / shares			$ 13.67	$ 19.02	$ 7.95
Period of recognition for costs not yet recognized (years)			2 years
Employee Stock Option
Other Ownership Interests [Line Items]
Percentage of grants to employees vesting			25.00%
Option grants to employees vesting period			4 years
Tax benefit | $			$ 0	$ 0	$ 0
Period of recognition for costs not yet recognized (years)			4 years
Restricted Stock Units
Other Ownership Interests [Line Items]
Vesting period			1 year
Grants in the period, weighted average grant date fair value (usd per share) | $ / shares			$ 19.99
Employee service, compensation cost not yet recognized | $			$ 9,100,000
Nonvested compensation, weighted average grant date fair value (usd per share) | $ / shares				$ 18.36
Nonvested compensation (shares)			736,020	670,017
Period of recognition for costs not yet recognized (years)			2 years
Service period			4 years
Performance Share and Restricted Stock Unit Awards
Other Ownership Interests [Line Items]
Total fair value of restricted stock awards vesting | $			$ 5,600,000	$ 8,500,000	$ 2,100,000
Performance Shares
Other Ownership Interests [Line Items]
Compensation not yet recognized | $			$ 2,400,000
Vesting period			3 years
Nonvested compensation, weighted average grant date fair value (usd per share) | $ / shares			$ 23.71	$ 28.93	$ 9.72
Performance period			3 years
Period of recognition for costs not yet recognized (years)			1 year
2004 Stock and Incentive Award Plan
Other Ownership Interests [Line Items]
Total number of common stock available to be issued (shares)			2,900,000
Stock Purchase Plan
Other Ownership Interests [Line Items]
Total number of common stock available to be issued (shares)			3,200,000
Maximum number of shares to be offered			5,000,000
Share purchase periods | Employees			2
Duration of purchase of shares			6 months
Employee eligible in participating in offering period			6 months
Number of working hours to be eligible (working hour) | working_hour			20
Number of working months to be eligible			5 months
Employees ownership threshold			5.00%
Percentage of fair market value of a share of common stock on the first day of the offering period			85.00%
Percentage of fair market value of a share of common stock on the last day of the offering period			85.00%
Number of additional shares reserved for issuance (shares)				500,000		1,000,000	500,000
Maximum number of shares to be offered under the Stock Purchase Plan			149,778	98,586	164,194
Stock And Incentive Award Plan 2020
Other Ownership Interests [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Period Increase (Decrease)	1,950,000
Employee Stock Purchase Plan
Other Ownership Interests [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Period Increase (Decrease)	1,000,000