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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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-Publisher SEC

-Name Regulation S-X (SX)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Subordinated Debentures - Additional Information (Detail) (USD $)	12 Months Ended	1 Months Ended
	Dec. 31, 2014	Oct. 31, 2004	Dec. 31, 2006	Jun. 30, 2004	Mar. 31, 2004	Dec. 31, 2013
Subordinate Debenture [Line Items]
LIBOR period	3 months
Carrying value of securities, net of remaining purchase discount	$ 32,642,000us-gaap_SubordinatedDebt					$ 32,486,000us-gaap_SubordinatedDebt
Horizon Statutory Trust Two [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold		10,300,000
Securities bearing interest rate	90-day LIBOR plus 1.95%
Junior subordinated debentures and the securities variable rate		1.95%
LIBOR period	90 days
Interest rate on junior subordinated debentures and securities	2.19%
Junior subordinated debentures maturity date	Oct. 21, 2034
Cost of issuance of the securities		17,500
First call date of the securities	Oct. 31, 2009
Horizon Bancorp Capital Trust Three [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold			12,400,000
Securities bearing interest rate	90-day LIBOR plus 1.65%
Junior subordinated debentures and the securities variable rate			1.65%
LIBOR period	90 days
Interest rate on junior subordinated debentures and securities	1.88%
Junior subordinated debentures maturity date	Jan. 30, 2037
Cost of issuance of the securities			12,647
Alliance Financial Statutory Trust One [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold				5,200,000
Securities bearing interest rate	90-day LIBOR plus 2.65%
Junior subordinated debentures and the securities variable rate				2.65%
LIBOR period	90 days
Interest rate on junior subordinated debentures and securities	2.89%
Junior subordinated debentures maturity date	Jun. 01, 2034
Am Tru Statutory Trust One [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold					3,500,000
Securities bearing interest rate	90-day LIBOR plus 2.85%
Junior subordinated debentures and the securities variable rate					2.85%
LIBOR period	90 days
Interest rate on junior subordinated debentures and securities	3.09%
Junior subordinated debentures maturity date	Mar. 01, 2034
Carrying value of securities, net of remaining purchase discount	2,900,000
Heartland Statutory Trust Two [Member]
Subordinate Debenture [Line Items]
Trust Preferred Capital Securities Sold			3,000,000
Securities bearing interest rate	90-day LIBOR plus 1.67%
Junior subordinated debentures and the securities variable rate			1.67%
LIBOR period	90 days
Interest rate on junior subordinated debentures and securities	1.91%
Junior subordinated debentures maturity date	Dec. 01, 2036
Carrying value of securities, net of remaining purchase discount	$ 1,500,000