Condensed Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Assets
Cash on deposit with Bank	$ 23,879	$ 47,513
Cash on deposit with others	8,899	7,710
Investment in common stock of Bank	2,603	3,113
Deferred and current income tax	15,913	17,386
Total assets	1,422,458	1,427,193
Liabilities
Other borrowings	11,606	12,410
Other liabilities	12,675	12,348
Total liabilities	1,282,965	1,294,566
Stockholders' Equity	139,493	132,627	131,140	129,727
Total liabilities and stockholders' equity	1,422,458	1,427,193
MutualFirst Financial, Inc.
Assets
Cash on deposit with Bank	1,946	494
Cash on deposit with others	1,008	1,181
Total cash	2,954	1,675
Investment in common stock of Bank	148,484	143,971
Deferred and current income tax	483	239
Total assets	151,921	145,885
Liabilities
Other borrowings	11,606	12,410
Other liabilities	822	848
Total liabilities	12,428	13,258
Stockholders' Equity	139,493	132,627
Total liabilities and stockholders' equity	$ 151,921	$ 145,885