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Note 23 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 4 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 18, 2022 | Feb. 14, 2022 | Feb. 07, 2022 | Dec. 31, 2021 | Aug. 05, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Treasury Stock, Shares, Acquired (in shares) |  |  |  | 2,153,576 | 1,832,481 | 3,986,057 |  |
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) |  |  |  | $ 42.77 | $ 40.93 | $ 41.92 |  |
Treasury Stock, Value, Acquired, Cost Method |  |  |  | $ 92,100 | $ 75,000 | $ 167,104 | $ 23,593 | $ 36,301
Subsequent Event [Member] |  |  |  |  |  |  |  |
Dividends Payable, Amount Per Share (in dollars per share) |  | $ 0.34 |  |  |  |  |  |
Treasury Stock, Shares, Acquired (in shares) | 704,927 |  |  |  |  |  |  |
Treasury Stock Acquired, Average Cost Per Share (in dollars per share) | $ 46.67 |  |  |  |  |  |  |
Treasury Stock, Value, Acquired, Cost Method | $ 32,900 |  |  |  |  |  |  |
Dividends Payable, Date to be Paid |  | Mar. 07, 2022 |  |  |  |  |  |
Dividends Payable, Date of Record |  | Feb. 25, 2022 |  |  |  |  |  |
HSBC Bank USA West Coast Mass Market Consumer and Retail Banking Business [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Total |  |  | $ 5,000 |  |  |  |  |

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- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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