ACQUISITIONS (Details) (USD $)	12 Months Ended			1 Months Ended	3 Months Ended	1 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Mar. 31, 2013	Sep. 30, 2012	Oct. 31, 2012	Oct. 17, 2014
ACQUISITIONS
Acquisition of outstanding common shares (as a percent)	100.00%							100.00%
Acquisition-related costs	$ 3,119,000
Goodwill	73,450,000	64,900,000	63,947,000	64,900,000
Cash received at purchase	(10,686,000)	18,157,000	5,464,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Goodwill	73,450,000	64,900,000	63,947,000	64,900,000
Parent Company
ACQUISITIONS
Cash received at purchase	(13,935,000)
Branch located in Hope, Indiana
ACQUISITIONS
Loans		3,000,000		3,000,000
Deposits		22,000,000		22,000,000
Goodwill		500,000		500,000
Cash received at purchase				18,000,000
Term over which goodwill and intangible asset will be deducted for tax purpose				15 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Goodwill		500,000		500,000
Branch located in Shelbyville, Kentucky
ACQUISITIONS
Loans			27,000,000
Deposits			37,000,000
Goodwill			1,000,000
Additional goodwill					400,000
Amortization period for time deposit premium		4 years
Cash received at purchase			7,500,000
Term over which goodwill and intangible asset will be deducted for tax purpose			15 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Goodwill			1,000,000
Branch located in Shelbyville, Kentucky | Core deposit
ACQUISITIONS
Intangible asset			200,000
Intangible asset amortization period			10 years
Brokerage firm located in Seymour, Indiana
ACQUISITIONS
Goodwill						800,000
Term over which goodwill and intangible asset will be deducted for tax purpose						15 years
Cash paid						1,600,000
Future cash payment required to be made						400,000
Consideration
Cash						1,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Goodwill						800,000
Brokerage firm located in Seymour, Indiana | Other customer relationship intangibles
ACQUISITIONS
Intangible asset						1,000,000
Intangible asset amortization period						13 years
Brokerage firm located in Seymour, Indiana | Non-compete
ACQUISITIONS
Intangible asset						100,000
Intangible asset amortization period						5 years
Brokerage firm located in Indianapolis, Indiana
ACQUISITIONS
Goodwill							200,000
Term over which goodwill and intangible asset will be deducted for tax purpose							15 years
Cash paid							400,000
Future cash payment required to be made							200,000
Consideration
Cash							400,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Goodwill							200,000
Brokerage firm located in Indianapolis, Indiana | Other customer relationship intangibles
ACQUISITIONS
Intangible asset							300,000
Intangible asset amortization period							13 years
Brokerage firm located in Indianapolis, Indiana | Non-compete
ACQUISITIONS
Intangible asset amortization period							5 years
MBT Bancorp
ACQUISITIONS
Cash received in exchange for each common stock owned (in dollars per share)								$ 35.16
Number of common shares received in exchange for each common stock owned								2.055
Total consideration in common stock (as a percent)								60.00%
Total consideration in cash (as a percent)								40.00%
Shares issued								1,226,312
Acquisition-related costs	3,119,000
Goodwill								8,550,000
Cash paid								13,992,000
Non-impaired loans and customer receivables	183,485,000
Gross contractual amounts receivable	185,400,000
Consideration
Cash								13,992,000
Equity Instruments								21,534,000
Fair Value of Total Consideration								35,526,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]
Cash and cash equivalents								3,306,000
Securities								31,214,000
Federal Home Loan Bank stock								1,476,000
Loans								184,716,000
Premises and equipment								4,863,000
Core deposit intangibles								1,661,000
Other assets								3,468,000
Total assets acquired								230,704,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]
Deposits								183,897,000
Federal Home Loan Bank advances								16,300,000
Other liabilities								3,531,000
Total liabilities assumed								203,728,000
Total identifiable net assets								26,976,000
Goodwill								8,550,000
Maximum | MBT Bancorp
ACQUISITIONS
Carrying amount of credit impaired loans acquired from acquisition	$ 1,000,000