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Stock Plans - Common Stock Available for Issuance (Details) shares in Millions | Dec. 31, 2021 shares
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Stock Plans |
Maximum grant of stock options, restricted stock, and restricted stock units to directors and employees | 0.8

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- Definition Number of shares authorized for issuance 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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