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Stock-based Compensation and Stockholders’ Equity - Narrative (Details) - USD ($) |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 16, 2019 | May 30, 2021 | May 31, 2020 | May 26, 2019 | May 27, 2018 | Oct. 19, 2017 | Oct. 10, 2013 | Jul. 14, 2010 | Oct. 15, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Options to purchase restricted stock units outstanding (in shares) |  | 1,834,017 | 1,716,358 | 2,000,096 | 1,955,335 |  |  |  |
Number of shares available for award under stock incentive plan (in shares) |  | 4,200,000 |  |  |  |  |  |  |
Preferred stock authorized (in shares) |  | 2,000,000.0 |  |  |  |  |  |  |
Preferred stock outstanding (in shares) |  | 0 |  |  |  |  |  |  |
Amount of unrecognized compensation expense related to unvested equity compensation |  | $ 3,000,000.0 |  |  |  |  |  |  |
Maximum repurchase amount of common stock |  |  |  |  |  |  |  | $ 10,000,000.0 |
Stock repurchased during period (in shares) |  | 0 | 0 | 0 |  |  |  |  |
Employee Stock Option |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Total expense expected to be recognized over the weighted-average period |  | 2 years 10 days |  |  |  |  |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Options to purchase restricted stock units outstanding (in shares) |  | 1,299,808 |  |  |  |  |  |  |
Total expense expected to be recognized over the weighted-average period |  | 1 year 8 months 15 days |  |  |  |  |  |  |
Stock Incentive Plan 2019 |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock initially available under stock award plan (in shares) | 2,000,000.0 |  |  |  |  |  |  |  |
Stock Incentive Plan 2019 | Employee Stock Option |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Maximum amount of award within a fiscal year (in shares) | 500,000 |  |  |  |  |  |  |  |
Stock Incentive Plan 2019 | Stock Grants and Stock Units |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Maximum amount of award within a fiscal year (in shares) | 250,000 |  |  |  |  |  |  |  |
Stock Incentive Plan 2019 | Stock Appreciation Rights (SARs) |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Maximum amount of award within a fiscal year (in shares) | 500,000 |  |  |  |  |  |  |  |
Maximum award for a non-employee direct within a fiscal year | $ 120,000 |  |  |  |  |  |  |  |
Stock Incentive Plan 2013 |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock initially available under stock award plan (in shares) |  |  |  |  |  | 1,000,000.0 | 2,000,000.0 |  |
Amount of shares and RSUs outstanding to be purchased (in shares) |  | 1,014,605 |  |  |  |  |  |  |
Stock Incentive Plan 2009 |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |
Common stock initially available under stock award plan (in shares) |  |  |  |  |  |  |  |  | 1,900,000

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: 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 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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