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Capital Stock and Stock-Based Awards (Tables) | 12 Months Ended
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May 31, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of capital stock | Capital stock consisted of the following as of May 31, 2021:
| Class A Stock |  | Common Stock |  | Preferred Stock
Authorized | 4,000,000 |  |  | 70,000,000 |  |  | 2,000,000 |
Reserved for Issuance | — |  |  | 8,128,785 |  |  | — |
Outstanding | 1,656,200 |  |  | 32,707,795 |  |  | — |
Schedule of share-based compensation activity | The following table sets forth the intrinsic value of stock options exercised, pretax stock-based compensation cost and related tax benefits for the Company's equity plans for the fiscal years ended May 31:
| 2021 |  | 2020 |  | 2019
Total intrinsic value of stock options exercised | $ | 0.1 |  |  | $ | 0.2 |  |  | $ | 2.1 |
Total stock-based compensation cost (pretax) |  | 6.6 |  |  |  | 3.8 |  |  |  | 8.3 |
Tax benefits (shortfalls) related to stock-based compensation cost |  | (3.7) |  |  |  | (0.5) |  |  |  | 0.5 |
Weighted average grant date fair value per option | $ | 3.80 |  |  | $ | 6.99 |  |  | $ | 11.97 |
Schedule of stock option activity | The following table sets forth the stock option activity under the Company's equity plans for the fiscal year ended May 31, 2021:
| Options |  | Weighted Average Exercise Price |  | Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value (in millions)
Outstanding at May 31, 2020 |  | 3,002,981 |  |  | $ | 36.43 |  |  |  |  |  |  |
Granted |  | 2,385,096 |  |  |  | 21.07 |  |  |  |  |  |  |
Exercised |  | (14,760) |  |  |  | 27.40 |  |  |  |  |  |  |
Expired, canceled and forfeited |  | (386,055) |  |  |  | 28.50 |  |  |  |  |  |  |
Outstanding at May 31, 2021 |  | 4,987,262 |  |  | $ | 29.73 |  |  |  | 5.4 |  | $ | 31.5 |
Exercisable at May 31, 2021 |  | 2,386,124 |  |  | $ | 36.55 |  |  |  | 4.3 |  | $ | 2.8 |
Schedule of restricted stock unit activity | The following table sets forth the restricted stock unit award activity for the fiscal years ended May 31:
|  | 2021 |  |  | 2020 |  |  | 2019
Granted |  | 137,106 |  |  |  | 34,632 |  |  |  | 82,044 |
Weighted average grant date price per unit | $ | 21.24 |  |  | $ | 32.56 |  |  | $ | 42.86 |
The following table sets forth the MSPP RSUs activity for the fiscal years ended May 31:
|  | 2021 |  |  | 2020 |  |  | 2019
MSPP RSUs allocated |  | 5,665 |  |  |  | 3,843 |  |  |  | 17,239 |
Purchase price per unit | $ | 16.88 |  |  | $ | 24.36 |  |  | $ | 30.48 |
Schedule of nonvested restricted stock unit activity | The following table sets forth the restricted stock unit and MSPP RSUs activity for the year ended May 31, 2021:
| Restricted stock units and MSPP RSUs |  |  |  | Weighted Average grant date fair value
Nonvested as of May 31, 2020 | 226,433 |  |  |  | $ | 25.11 |
Granted | 142,771 |  |  |  |  | 20.56 |
Vested | (140,061) |  |  |  |  | 22.77 |
Forfeited | (12,045) |  |  |  |  | 39.85 |
Nonvested as of May 31, 2021 | 217,098 |  |  |  | $ | 22.80 |
Schedule of employee stock purchase plan activity | The following table sets forth the ESPP share activity for the fiscal years ended May 31:
|  | 2021 |  |  | 2020 |  |  | 2019
Shares issued |  | 67,097 |  |  |  | 65,714 |  |  |  | 48,000 |
Weighted average purchase price per share | $ | 22.19 |  |  | $ | 27.84 |  |  | $ | 36.25 |

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- Definition Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65888546&loc=d3e21300-112643 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21553-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21538-112644 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21488-112644 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 11: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21484-112644 Reference 13: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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