Minimum percentage of the total merger consideration that will be paid in company stock.

No definition available.

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- Definition

Represents the number of shares of the acquiring entity into which the shares of the acquired entity may be converted pursuant to a definitive agreement.

+ References

No definition available.

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- Definition

Percentage of shares being acquired that will receive cash consideration.

+ References

No definition available.

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- Definition

Percentage of shares being acquired that will receive stock consideration.

+ References

No definition available.

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- Definition

Fair value adjustment of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

+ References

No definition available.

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- Definition

The number of performing loans acquired as part of a business combination.

+ References

No definition available.

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- Definition

Amount of deposit liabilities assumed at the acquisition date.

+ References

No definition available.

+ Details

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Namespace Prefix:	cban_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

The amount of loans receivable recognized as of the acquisition date.

+ References

No definition available.

+ Details

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

No definition available.

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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- Definition

Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Section 30
-Paragraph 8
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Balance Type:	credit
Period Type:	duration

- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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Balance Type:	credit
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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
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-SubTopic 20
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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Balance Type:	debit
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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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- Details

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Note 2 - Business Combination (Details Textual)	Dec. 17, 2018 USD ($) $ / shares shares	Oct. 22, 2018 USD ($)	Dec. 31, 2018 USD ($)	Aug. 31, 2018 $ / shares	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Goodwill, Ending Balance			$ 202,244
Share Price \| $ / shares	$ 16.10			$ 17.73
Assets, Total			1,251,878,468		1,232,755,317
Loans and Leases Receivable, Gross, Total			782,027,368		765,283,855	$ 754,283,563
Deposits, Total			1,085,125,458		$ 1,067,985,405
LBC Bancshares, Inc [Member]
Assets, Total			207,000,000
Loans and Leases Receivable, Gross, Total			136,000,000
Deposits, Total			$ 182,000,000
Planters First Bank [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Receivable		$ 20,430,271
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposit Liabilities		12,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total		772,727
Business Acquisition, Transaction Costs		113,000
Goodwill, Ending Balance		202,244
Business Acquisition, Goodwill, Expected Tax Deductible Amount		$ 202,000
Business Combination, Number of Acquired Receivables		89
Business Combination, Acquired Receivable, Fair Value		$ 20,430,271
Business Combination, Acquired Receivables, Discounted Fair Value Adjustment		319,244
Business Combination, Consideration Transferred, Total		10,237,789
Planters First Bank [Member] \| Land [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total		$ 725,000
LBC Bancshares, Inc [Member]
Business Acquisition, Share Price \| $ / shares	$ 23.50
Business Acquisition, Number of Shares of Acquiring Entity for Each Share of Acquired Entity \| shares	1.3239
Business Acquistion, Percentage of Shares Receiving Stock Consideration	55.00%
Business Acquistion, Percentage of Shares Receiving Cash Consideration	45.00%
Business Acquisition, Minimum Percentage of Merger Consideration Paid in Stock	50.00%
Business Combination, Consideration Transferred, Total	$ 34,100,000