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Note 17 - Ames National Corporation (Parent Company Only) Financial Statements - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 23,913	$ 18,850
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	1,399	1,446
Credit for loan losses	(757)	5,681
Provision (credit) for deferred income taxes	733	(1,087)
Decrease in accrued income receivable	1,019	646
(Increase) decrease in other assets	(617)	(408)
Increase (decrease) in accrued expense and other liabilities	(1,641)	459
Net cash provided by operating activities	30,539	29,712
CASH FLOWS FROM INVESTING ACTIVITIES
Decrease in loans	(13,921)	(86,302)
Purchase of premises and equipment	(1,874)	(1,249)
Net cash provided by (used in) investing activities	(268,636)	(184,264)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid	(9,389)	(9,072)
Stock repurchases	(710)	(1,992)
Net cash (used in) financing activities	154,129	205,833
Beginning	173,097
Ending	89,129	173,097
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	23,913	18,850
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	98	97
Credit for loan losses	(5)	0
Provision (credit) for deferred income taxes	342	(60)
Equity in net income of bank subsidiaries	(24,918)	(19,413)
Dividends received from bank subsidiaries	9,656	9,599
Decrease in accrued income receivable	4	0
(Increase) decrease in other assets	285	(4)
Increase (decrease) in accrued expense and other liabilities	23	(48)
Net cash provided by operating activities	9,398	9,021
CASH FLOWS FROM INVESTING ACTIVITIES
Decrease in loans	120	107
Investments in bank subsidiary	0	(310)
Purchase of premises and equipment	(18)	(292)
Net cash provided by (used in) investing activities	102	(495)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid	(9,389)	(9,072)
Stock repurchases	(710)	(1,992)
Net cash (used in) financing activities	(10,099)	(11,064)
Net increase (decrease) in cash and cash equivalents	(599)	(2,538)
Beginning	2,588	5,126
Ending	1,989	2,588
Cash receipts for income taxes	$ 178	$ 173

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