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Note 22 - Parent Company Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Net income | $ 11,550 | $ 8,266 | $ 8,238 | $ 7,872 | $ 9,564 | $ 9,156 | $ 10,451 | $ 9,631 | $ 35,926 | $ 38,802 | $ 36,340
(Increase) decrease in other operating activities |  |  |  |  |  |  |  |  | (6,662) | 7,003 | 3,974
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 45,844 | 56,655 | 49,499
Investing activities |  |  |  |  |  |  |  |  |  |  |
Net cash provided by investing activities |  |  |  |  |  |  |  |  | 17,798 | 171,377 | 49,398
Payments for repurchase of common stock |  |  |  |  |  |  |  |  | 21,872 | 16,362 | 34,412
Payments of common stock dividends |  |  |  |  |  |  |  |  | (17,876) | (15,060) | (21,090)
Net cash used in financing activities |  |  |  |  |  |  |  |  | 175,910 | (87,896) | (179,975)
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 35,926 | 38,802 | 36,340
(Increase) decrease in other operating activities |  |  |  |  |  |  |  |  | 1,047 | 1,865 | 1,509
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 36,973 | 40,667 | 37,849
Investing activities |  |  |  |  |  |  |  |  |  |  |
Dividends in excess of undistributed net income of subsidiaries |  |  |  |  |  |  |  |  | (13,284) | (1,002) | 10,268
Net cash provided by investing activities |  |  |  |  |  |  |  |  | (13,284) | (1,002) | 10,268
Proceeds from issuance of common stock |  |  |  |  |  |  |  |  | 0 | 136 | 832
Payments for repurchase of common stock |  |  |  |  |  |  |  |  | (21,872) | (16,362) | (34,412)
Payments of common stock dividends |  |  |  |  |  |  |  |  | (17,876) | (15,060) | (21,090)
Net change in other financing activities |  |  |  |  |  |  |  |  | 2,150 | 1,893 | 1,063
Net cash used in financing activities |  |  |  |  |  |  |  |  | (37,598) | (29,393) | (53,607)
Net increase (decrease) in cash and cash equivalents |  |  |  |  |  |  |  |  | (13,909) | 10,272 | (5,490)
Cash and cash equivalents at beginning of period |  |  |  | $ 23,998 |  |  |  | $ 13,726 | 23,998 | 13,726 | 19,216
Cash and cash equivalents at end of period | $ 10,089 |  |  |  | $ 23,998 |  |  |  | $ 10,089 | $ 23,998 | $ 13,726

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