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Note 24 - Mercantile Bank Corporation (Parent Company Only) Condensed Financial Statements - Condensed Statement of Cash Flows (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Cash flows from operating activities |  |  |
Net income | $ 31,913,000 | $ 27,020,000 | $ 17,331,000
Adjustments to reconcile net income to net cash from operating activities: |  |  |
Stock-based compensation expense | 1,459,000 | 684,000 | 714,000
Stock grants to directors for retainer fees | 327,000 | 403,000 | 155,000
Gain on trust preferred securities repurchase | (2,970,000) | 0 | 0
Other assets | (648,000) | (4,815,000) | 1,795,000
Change in other liabilities | (1,046,000) | 4,185,000 | (9,822,000)
Net cash from operating activities | 34,602,000 | 36,004,000 | 14,439,000
Cash flows from investing activities |  |  |
Proceeds from stock option exercises, net of cashless exercises | 978,000 | 891,000 | 282,000
Employee stock purchase plan | 36,000 | 44,000 | 23,000
Dividend reinvestment plan | 1,601,000 | 655,000 | 209,000
Repurchase of common stock | (3,732,000) | (15,762,000) | 0
Payment of cash dividends to common shareholders | (18,731,000) | (9,516,000) | (24,464,000)
Repurchase of trust preferred securities | (8,030,000) | 0 | 0
Net change in cash and cash equivalents | 93,705,000 | (82,847,000) | 25,773,000
Parent Company [Member] |  |  |
Cash flows from operating activities |  |  |
Net income | 31,913,000 | 27,020,000 | 17,331,000
Adjustments to reconcile net income to net cash from operating activities: |  |  |
Equity in undistributed net income of subsidiary | (3,999,000) | (5,648,000) | (9,131,000)
Stock-based compensation expense | 1,459,000 | 684,000 | 714,000
Stock grants to directors for retainer fees | 327,000 | 403,000 | 155,000
Gain on trust preferred securities repurchase | (2,970,000) | 0 | 0
Other assets | 387,000 | 11,000 | (8,163,000)
Change in other liabilities | 78,000 | 4,717,000 | 21,979,000
Net cash from operating activities | 27,195,000 | 27,187,000 | 22,885,000
Cash flows from investing activities |  |  |
Proceeds from stock option exercises, net of cashless exercises | 978,000 | 891,000 | 282,000
Employee stock purchase plan | 36,000 | 44,000 | 23,000
Dividend reinvestment plan | 1,601,000 | 655,000 | 209,000
Repurchase of common stock | (3,732,000) | (15,762,000) | 0
Payment of cash dividends to common shareholders | (18,731,000) | (9,516,000) | (24,464,000)
Repurchase of trust preferred securities | (8,030,000) | 0 | 0
Net cash for financing activities | (27,878,000) | (23,688,000) | (23,950,000)
Net change in cash and cash equivalents | (683,000) | 3,499,000 | (1,065,000)
Cash and cash equivalents at beginning of period | 4,940,000 | 1,441,000 | 2,506,000
Cash and cash equivalents at end of period | $ 4,257,000 | $ 4,940,000 | $ 1,441,000

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