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Equity Compensation Plans (Tables)

12 Months Ended

May 31, 2023

Stock Option Activity

(options in thousands)		Options				Weighted-Average Exercise Price				Weighted-Average Grant Date Fair Value
Outstanding at May 31, 2020 (972 exercisable)			4,324			$	27.98			$	6.98
Granted			403				34.23				7.71
Exercised			(1,389	)			24.38				6.31
Forfeited			(381	)			28.99				7.20
Outstanding at May 31, 2021 (643 exercisable)			2,957				27.98				6.98
Granted			615				36.42				8.49
Exercised			(281	)			22.79				6.29
Forfeited			(47	)			33.93				8.02
Outstanding at May 31, 2022 (1,191 exercisable)			3,244				32.13				7.66
Granted			1,704				14.68				4.61
Exercised			(22	)			14.78				4.23
Forfeited			(704	)			29.81				7.26
Outstanding at May 31, 2023 (1,401 exercisable)			4,222				25.56				6.51

Summary of Stock Options Outstanding

The following is a summary of stock options outstanding at May 31, 2023:

		Options Outstanding												Options Exercisable
						Average
(options in thousands)						Contractual Life				Weighted-Average								Weighted-Average
Range of Exercise Price		Number				(in years)				Exercise Price				Number				Exercise Price
$12.20 - $20.00			1,585				6.3			$	13.63				27			$	15.95
$20.01 - $28.00			138				6.7				25.11				90				23.93
$28.01 - $36.00			2,124				1.8				31.77				1,205				31.84
$36.01 - $42.15			375				3.4				40.94				79				40.99
			4,222				3.8			$	25.56				1,401			$	31.54

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options Intrinsic Value

Remaining compensation cost to be expensed in future periods for non-vested options was $11,729 at May 31, 2023, with a weighted average expense recognition period of 2.4 years.

		Year ended May 31
		2023				2022				2021
Aggregate intrinsic value of options outstanding		$	6,154			$	850			$	46,667
Aggregate intrinsic value of options exercisable		$	42			$	817			$	11,617
Aggregate intrinsic value of options exercised		$	73			$	5,507			$	22,349

The fair value of stock options granted was estimated using the following weighted-average assumptions:

		Year ended May 31
		2023				2022				2021
Risk-free interest rate			3.3	%			0.4	%			0.2	%
Expected dividend yield			0.0	%			0.0	%			0.0	%
Expected stock volatility			34.0	%			32.8	%			31.3	%
Expected option life		4.5 years				3.12 years				3.25 years

Restricted Stock Units (RSUs) [Member]

Schedule of Nonvested Restricted Stock Units Activity

(RSU Grants in thousands)		RSUs				Weighted Average Grant Date Fair Value
Outstanding at May 31, 2021			121			$	34.21
Granted			169				37.28
Released			(25	)			34.24
Forfeited			(8	)			36.80
Outstanding at May 31, 2022			257				36.14
Granted			596				13.83
Released			(60	)			35.14
Forfeited			(27	)			22.81
Outstanding at May 31, 2023			766				19.30

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Tabular disclosure of the changes in outstanding nonvested restricted stock units.

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