Completed securities trade of a shorted U.S. Treasury security.

No definition available.

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- Definition

Represents fair value of amended warrant that was reclassified into shareholders' equity during the period.

+ References

No definition available.

+ Details

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- Definition

The estimated unrealized loss on cash flow hedge that will be reclassified to earnings during remaining life of the swap.

+ References

No definition available.

+ Details

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- Definition

Termination fees associated with pay-fixed interest rate swaps.

+ References

No definition available.

+ Details

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- Definition

Amount of premiums on financial instruments that have not been earned as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Nominal or face amount used to calculate payments on the derivative asset.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

+ Details

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- Definition

Average remaining period until maturity of the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(c)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

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- Definition

Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 15

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-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958

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DERIVATIVE FINANCIAL INSTRUMENTS (Details) (USD $)	3 Months Ended			12 Months Ended
DERIVATIVE FINANCIAL INSTRUMENTS (Details) (USD $)	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2009	Dec. 31, 2014	Dec. 31, 2013	Apr. 16, 2013	Sep. 30, 2012
Derivative financial instrument according to type of hedge[ Abstract]
Termination fee		$ 600,000
Unrealized loss to be reclassified into earnings over remaining life			1,600,000
Completed securities trade	13,000,000ibcp_CompletedSecuritiesTrade
Fair value of amended warrant was reclassified into shareholders' equity						1,500,000
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives				619,000	494,000
Liability Derivatives				366,000	0
Interest-Rate Cap Agreement [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount							20,000,000
Cash Flow Hedge [Member] \| Interest-Rate Cap Agreement [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Unrecognized premiums				0	0
No Hedge Designation [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount				61,959,000	51,166,000
Average Maturity				1 year 1 month 6 days	0 years 1 month 6 days
Fair Value				253,000	494,000
No Hedge Designation [Member] \| Rate-Lock Mortgage Loan Commitments [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount				16,759,000	15,754,000
Average Maturity				0 years 1 month 6 days	0 years 1 month 6 days
Fair Value				437,000	366,000
No Hedge Designation [Member] \| Mandatory Commitments to Sell Mortgage Loans [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount				38,600,000	35,412,000
Average Maturity				0 years 1 month 6 days	0 years 1 month 6 days
Fair Value				(184,000)	128,000
Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount				3,300,000
Average Maturity				9 years 4 months 24 days
Fair Value				(182,000)
Variable Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Derivative financial instrument according to type of hedge[ Abstract]
Notional Amount				3,300,000
Average Maturity				9 years 4 months 24 days
Fair Value				182,000
Other Assets [Member] \| No Hedge Designation [Member] \| Rate-Lock Mortgage Loan Commitments [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives				437,000	366,000
Other Assets [Member] \| No Hedge Designation [Member] \| Mandatory Commitments to Sell Mortgage Loans [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives				0	128,000
Other Assets [Member] \| Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives				0	0
Other Assets [Member] \| Variable Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Asset Derivatives				182,000	0
Other Liabilities [Member] \| No Hedge Designation [Member] \| Rate-Lock Mortgage Loan Commitments [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives				0	0
Other Liabilities [Member] \| No Hedge Designation [Member] \| Mandatory Commitments to Sell Mortgage Loans [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives				184,000	0
Other Liabilities [Member] \| Fixed Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives				182,000	0
Other Liabilities [Member] \| Variable Income Interest Rate [Member] \| No Hedge Designation [Member] \| Interest Rate Swap [Member]
Fair value of derivative instruments, balance sheet location [Abstract]
Liability Derivatives				$ 0	$ 0