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Stock awards (Details 2) - Board of Directors - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based compensation arrangement by share-based payment award [Line Items] |  |  |
Share-based Compensation Arrangement Shares Issued in Period | 41,925 | 45,273 | 41,644
Share-based Compensation Arrangement, Value | $ 1.2 | $ 1.1 | $ 1.2

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Value + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Number of shares issued 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Details
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