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Note 22 - Mercantile Bank Corporation (Parent Company Only) Condensed Financial Statements - Condensed Statement of Cash Flows (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities |  |  |
Net income | $ 61,063,000 | $ 59,021,000 | $ 44,138,000
Adjustments to reconcile net income to net cash from operating activities: |  |  |
Stock-based compensation expense | 3,377,000 | 3,784,000 | 2,325,000
Stock grants to directors for retainer fee | 359,000 | 344,000 | 394,000
Other assets | (437,000) | (12,655,000) | (9,907,000)
Accrued interest and other liabilities | 32,524,000 | (3,513,000) | 886,000
Cash flows from investing activities |  |  |
Net cash for investing activities | (554,999,000) | (495,507,000) | (398,806,000)
Cash flows from financing activities |  |  |
Proceeds from stock option exercises, net of cashless exercises | 36,000 | 50,000 | 3,000
Employee stock purchase plan | 45,000 | 48,000 | 49,000
Dividend reinvestment plan | 867,000 | 877,000 | 814,000
Net proceeds from subordinated notes issuance | 14,645,000 | 73,635,000 | 0
Repurchases of common stock | 0 | (21,380,000) | (6,591,000)
Payment of cash dividends to common shareholders | (19,602,000) | (18,524,000) | (17,930,000)
Net cash (for) from financing activities | (443,251,000) | 780,088,000 | 753,204,000
Net change in cash and cash equivalents | (878,388,000) | 349,154,000 | 392,275,000
Parent Company [Member] |  |  |
Cash flows from operating activities |  |  |
Net income | 61,063,000 | 59,021,000 | 44,138,000
Adjustments to reconcile net income to net cash from operating activities: |  |  |
Equity in undistributed net income of subsidiary | (44,221,000) | (26,075,000) | (17,086,000)
Stock-based compensation expense | 3,377,000 | 3,784,000 | 2,325,000
Stock grants to directors for retainer fee | 359,000 | 344,000 | 394,000
Other assets | 858,000 | 49,000 | (227,000)
Accrued interest and other liabilities | 1,636,000 | (5,000) | 812,000
Net cash from operating activities | 23,072,000 | 37,118,000 | 30,356,000
Cash flows from investing activities |  |  |
Net capital investment into subsidiaries | (15,000,000) | (70,000,000) | 0
Net cash for investing activities | (15,000,000) | (70,000,000) | 0
Cash flows from financing activities |  |  |
Proceeds from stock option exercises, net of cashless exercises | 36,000 | 50,000 | 3,000
Employee stock purchase plan | 45,000 | 48,000 | 49,000
Dividend reinvestment plan | 867,000 | 877,000 | 814,000
Net proceeds from subordinated notes issuance | 14,645,000 | 73,635,000 | 0
Repurchases of common stock | 0 | (21,380,000) | (6,591,000)
Payment of cash dividends to common shareholders | (19,602,000) | (18,524,000) | (17,930,000)
Net cash (for) from financing activities | (4,009,000) | 34,706,000 | (23,655,000)
Net change in cash and cash equivalents | 4,063,000 | 1,824,000 | 6,701,000
Cash and cash equivalents at beginning of period | 14,570,000 | 12,746,000 | 6,045,000
Cash and cash equivalents at end of period | $ 18,633,000 | $ 14,570,000 | $ 12,746,000

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