Acquisitions (Details) $ / shares in Units, $ in Thousands			6 Months Ended
	Apr. 30, 2015 USD ($) $ / shares shares	Jan. 24, 2014 USD ($) Branch	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Consideration Paid:
Common shares issued			$ 9,063
Liabilities Assumed:
Goodwill resulting from merger			$ 30,187	$ 27,638
BNB Bancorp, Inc [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Share price | $ / shares	$ 15.75
Equity interest exchange ratio | shares	2.005
Consideration Paid:
Common shares issued	$ 9,063
Cash paid to shareholder(s)	4,403
Consideration paid	13,466
Identifiable Assets Acquired:
Cash and cash equivalents	13,396
Investment securities	58,239
Federal Reserve Bank stock	130
Federal Home Loan Bank stock	0
Loans	34,661
Premises and equipment	2,311
Bank owned life insurance	0
Core deposit intangible	1,418
Other real estate owned	0
Other assets	527
Total identifiable assets acquired	110,682
Liabilities Assumed:
Deposits	99,133
Short-term borrowings	0
Deferred income taxes	576
Other liabilities	57
Total liabilities assumed	99,766
Total Identifiable Net Assets Acquired	10,916
Goodwill resulting from merger	$ 2,550
Useful life			9 years
Eaton National Bank [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches | Branch		5
Consideration Paid:
Common shares issued		$ 0
Cash paid to shareholder(s)		24,750
Consideration paid		24,750
Identifiable Assets Acquired:
Cash and cash equivalents		15,635
Investment securities		35,859
Federal Reserve Bank stock		41
Federal Home Loan Bank stock		784
Loans		115,944
Premises and equipment		1,314
Bank owned life insurance		3,618
Core deposit intangible		2,466
Other real estate owned		262
Other assets		1,624
Total identifiable assets acquired		177,547
Liabilities Assumed:
Deposits		165,335
Short-term borrowings		651
Deferred income taxes		0
Other liabilities		263
Total liabilities assumed		166,249
Total Identifiable Net Assets Acquired		11,298
Goodwill resulting from merger		$ 13,452
Useful life			8 years
Eaton, Ohio [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches | Branch		1
West Alexandria, Ohio [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches | Branch		1
New Paris, Ohio [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches | Branch		1
Lewisburg, Ohio [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Number of branches | Branch		1