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Note 23 - Parent Company Condensed Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Operating Activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | $ 2,406,000 | $ 2,918,000 | $ 2,864,000 | $ 2,150,000 | $ 2,499,000 | $ 2,527,000 | $ 2,104,000 | $ 2,136,000 | $ 1,590,000 | $ 2,112,000 | $ 2,194,000 | $ 1,556,000 | $ 10,338,000 | $ 9,266,000 | $ 7,452,000
Adjustments to reconcile net income to cash and cash equivalents provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense |  |  |  |  |  |  |  |  |  |  |  |  | 288,000 | 192,000 | 88,000
Unrealized (gain) loss on equity securities |  |  |  |  |  |  |  |  |  |  |  |  |  | 207,000 |
Net change in other assets and liabilities |  |  |  |  |  |  |  |  |  |  |  |  | 14,077,000 | 13,348,000 | 13,419,000
Financing Activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock |  |  |  |  |  |  |  |  |  |  |  |  | (2,000) | (32,000) | (16,000)
Taxes paid on stock award shares for employees |  |  |  |  |  |  |  |  |  |  |  |  | 42,000 | 2,000 | 2,000
Cash dividends paid |  |  |  |  |  |  |  |  |  |  |  |  | (3,209,000) | (3,101,000) | (2,883,000)
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating Activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  |  |  |  | 10,325,000 | 9,253,000 | 7,439,000
Adjustments to reconcile net income to cash and cash equivalents provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity in undistributed net income of subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  | (6,299,000) | (3,524,000) | (3,496,000)
Stock compensation expense |  |  |  |  |  |  |  |  |  |  |  |  | 288,000 | 192,000 | 88,000
Unrealized (gain) loss on equity securities |  |  |  |  |  |  |  |  |  |  |  |  | (32,000) | 207,000 |
Net change in other assets and liabilities |  |  |  |  |  |  |  |  |  |  |  |  | (40,000) | (89,000) | (20,000)
Net cash provided by operating activities |  |  |  |  |  |  |  |  |  |  |  |  | 4,242,000 | 6,039,000 | 4,011,000
Investing Activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of equity investment |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,922,000) |
Net cash used in investing activities |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,922,000) |
Financing Activities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock |  |  |  |  |  |  |  |  |  |  |  |  | (2,000) | (32,000) | (16,000)
Taxes paid on stock award shares for employees |  |  |  |  |  |  |  |  |  |  |  |  | 42,000 | 2,000 | 2,000
Cash dividends paid |  |  |  |  |  |  |  |  |  |  |  |  | (3,196,000) | (3,088,000) | (2,870,000)
Net cash used in financing activities |  |  |  |  |  |  |  |  |  |  |  |  | (3,240,000) | (3,122,000) | (2,888,000)
Net increase in cash and cash equivalents |  |  |  |  |  |  |  |  |  |  |  |  | 1,002,000 | 995,000 | 1,123,000
Cash and cash equivalents at beginning of year |  |  |  | $ 2,845,000 |  |  |  | $ 1,850,000 |  |  |  | $ 727,000 | 2,845,000 | 1,850,000 | 727,000
Cash and cash equivalents at end of year | $ 3,847,000 |  |  |  | $ 2,845,000 |  |  |  | $ 1,850,000 |  |  |  | $ 3,847,000 | $ 2,845,000 | $ 1,850,000

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