SUBSEQUENT EVENT (Details) (USD $)							0 Months Ended
	Apr. 04, 2014	Mar. 31, 2014	Dec. 31, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2013 MBT Bancorp Merchants	Apr. 07, 2014 Subsequent event MBT Bancorp item	Apr. 07, 2014 Subsequent event MBT Bancorp Anticipates
Subsequent event
Number of branches spanning from Dearborn County, Indiana to suburban communities in greater Cincinnati, Ohio							6
Assets		$ 2,872,379,000	$ 2,859,864,000			$ 225,200,000
Loans		1,660,304,000	1,644,317,000			180,200,000
Deposits		2,225,825,000	2,200,628,000			187,900,000
Total equity		315,559,000	305,526,000			23,900,000
Number of common shares received in exchange for each common stock owned							$ 2.055
Cash received in exchange for each common stock owned (in dollars per share)							$ 35.16
Total consideration in common stock (as a percent)							60.00%
Total consideration in cash (as a percent)							40.00%
Closing price of common stock (in dollars per share)	$ 16.40			$ 13.79	$ 13.38
Total consideration							33,800,000
Shares issued								1,216,000
Cash payment								$ 13,800,000