Note 16 - Emclaire Financial Corp - Condensed Financial Statements, Parent Corporation Only - Condensed Balance Sheets (Details) - USD ($)	Dec. 31, 2020	Nov. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents	$ 37,439,000		$ 14,986,000
Goodwill	19,460,000		19,460,000
Total Assets	1,032,323,000		915,296,000
Long-term borrowed funds	30,000,000		26,500,000
Accrued expenses and other liabilities	14,692,000		13,148,000
Stockholders' equity	91,480,000	$ 87,400,000	85,858,000	$ 79,827,000
Total Liabilities and Stockholders' Equity	1,032,323,000		915,296,000
Parent Company [Member]
Cash and cash equivalents	114,000		40,000	$ 18,000
Equity in net assets of subsidiaries	88,132,000		84,065,000
Goodwill	5,190,000		5,190,000
Other assets	134,000		171,000
Total Assets	93,570,000		89,466,000
Other short-term borrowed funds	2,050,000		2,050,000
Long-term borrowed funds			1,500,000
Accrued expenses and other liabilities	40,000		58,000
Stockholders' equity	91,480,000		85,858,000
Total Liabilities and Stockholders' Equity	$ 93,570,000		$ 89,466,000