Emclaire Financial Corp. - Condensed Financial Statements, Parent Corporation Only (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012
Operating activities:
Net income	$ 3,654	$ 3,833
Adjustments to reconcile net income to net cash provided by operating activities:
Realized gains on sales of available for sale securities, net	(1,360)	(523)
Securities impairment loss recognized in earnings	(103)
Net cash provided by operating activities	2,322	6,607
Investing activities:
Net cash provided by (used in) investing activities	(24,164)	261
Financing activities:
Proceeds from issuance of common stock	0	4,576
Proceeds from issuance of preferred stock (Series B)	0	10,000
Redemption of preferred stock (Series A)	0	(7,500)
Warrant repurchase	0	(51)
Dividends paid	(1,930)	(1,537)
Net cash provided by financing activities	14,073	2,298
Increase (decrease) in cash and cash equivalents	(7,769)	9,166
Cash and cash equivalents at beginning of period	28,193	19,027
Cash and cash equivalents at end of period	20,424	28,193
Parent Company [Member]
Operating activities:
Net income	3,654	3,833
Adjustments to reconcile net income to net cash provided by operating activities:
(Undistributed equity in) distributions in excess of net income of subsidiary	(2,458)	652
Realized gains on sales of available for sale securities, net	(424)	0
Securities impairment loss recognized in earnings	103	0
Other, net	161	(16)
Net cash provided by operating activities	1,036	4,469
Investing activities:
Sales (purchases) of investment securities	558	(52)
Investment in subsidiaries	0	(4,873)
Net cash provided by (used in) investing activities	558	(4,925)
Financing activities:
Net change in borrowings	275	(5,000)
Proceeds from issuance of common stock	0	4,576
Proceeds from issuance of preferred stock (Series B)	0	10,000
Redemption of preferred stock (Series A)	0	(7,500)
Warrant repurchase	0	(51)
Proceeds from exercise of stock options, including tax benefit	12	0
Dividends paid	(1,930)	(1,537)
Net cash provided by financing activities	(1,643)	488
Increase (decrease) in cash and cash equivalents	(49)	32
Cash and cash equivalents at beginning of period	87	55	38
Cash and cash equivalents at end of period	$ 38	$ 87	$ 38