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Note 8 - Share Repurchase Program (Details Textual) |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 13, 2020 | Dec. 31, 2022 USD ($) shares | Sep. 30, 2022 shares | Jun. 30, 2022 USD ($) shares | Mar. 31, 2022 USD ($) shares | Dec. 31, 2021 shares | Sep. 30, 2021 shares | Mar. 31, 2020 USD ($) shares | Dec. 31, 2022 USD ($) shares | Dec. 31, 2020 USD ($) | May 03, 2022 USD ($) shares | Aug. 31, 2020 shares | Aug. 31, 2019 USD ($) shares
Stock Repurchase Program, Authorized Amount | $ |  |  |  |  |  |  |  |  |  |  | $ 50,000,000.0 |  | $ 34,000,000
Stock Repurchase Program, Number of Shares Authorized to be Repurchased (in shares) | shares |  |  |  |  |  |  |  |  |  |  | 3,100,000 | 2,700,000 | 1,800,000
Stock Repurchased and Retired During Period, Shares (in shares) | shares |  | 0 | 0 | 963,000 | 1,300,000 | 0 | 0 | 53,064 |  |  |  |  |
Stock Repurchased and Retired During Period, Value | $ |  |  |  | $ 16,800,000 | $ 25,000,000.0 |  |  | $ 597,000 | $ 41,753,000 | $ 597,000 |  |  |
Stock Repurchase Program, Remaining Authorized Repurchase Amount | $ |  | $ 33,200,000 |  |  |  |  |  |  | $ 33,200,000 |  |  |  |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased (in shares) | shares |  | 2,200,000 |  |  |  |  |  |  | 2,200,000 |  |  |  |
Stock Split To [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 3 |  |  |  |  |  |  |  |  |  |  |  |
Stock Split from [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 2 |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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