Sale of Stock, Number Of Shares Registered For Resale Or Other Disposition

No definition available.

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Period Type:	instant

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ 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 (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

+ Details

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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Period Type:	instant

- 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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Period Type:	instant

- 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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ 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 (c)(3)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of cash outflow, made soon after acquisition date of business combination, to settle contingent consideration liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (d)
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Balance Type:	credit
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of shares of stock issued during the period as part of a transaction to acquire assets that do not qualify as a business combination.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Value of stock issued pursuant to acquisitions during the period.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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Balance Type:	credit
Period Type:	duration

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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-Publisher FASB
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-SubTopic 10
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- Details

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- Details

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SHAREHOLDERS' EQUITY - Narrative (Details) - USD ($)							1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended	18 Months Ended
SHAREHOLDERS' EQUITY - Narrative (Details) - USD ($)	Jul. 01, 2019	Jun. 29, 2018	May 25, 2018	Jan. 31, 2018	Jan. 03, 2018	Jan. 18, 2017	Jan. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 31, 2018	Jun. 30, 2019	Sep. 19, 2019	Feb. 16, 2018
Subsidiary, Sale of Stock [Line Items]
Repurchase amount									$ 1,077,000	$ 11,561,000	$ 2,062,000
Increase in shareholders' equity								$ 869,294,000		$ 869,294,000	$ 547,127,000
Fidelity Southern Corporation
Subsidiary, Sale of Stock [Line Items]
Ameris Bancorp common shares issued (in shares)	22,181,522
Share price (in dollars per share)	$ 39.19
Increase in shareholders' equity	$ 869,300,000
Consideration transferred	$ 869,313,000
Hamilton State Bancshares, Inc.
Subsidiary, Sale of Stock [Line Items]
Ameris Bancorp common shares issued (in shares)		6,548,385
Share price (in dollars per share)		$ 53.35
Increase in shareholders' equity		$ 349,400,000
Consideration transferred		$ 397,135,000
Atlantic Coast Financial Corporation
Subsidiary, Sale of Stock [Line Items]
Ameris Bancorp common shares issued (in shares)			2,631,520
Share price (in dollars per share)			$ 56.15
Increase in shareholders' equity			$ 147,800,000
Consideration transferred			$ 169,287,000
US Premium Financing Holding Company
Subsidiary, Sale of Stock [Line Items]
Ameris Bancorp common shares issued (in shares)				830,301			1,073,158					1,073,158
Share price (in dollars per share)				$ 53.55			$ 53.55					$ 53.55
Increase in shareholders' equity				$ 44,500,000	$ 5,500,000	$ 5,800,000
Percentage of voting interests acquired				70.00%	25.01%	4.99%	70.00%					70.00%
Stock issued during period, purchase of assets (in shares)					114,285	128,572
Price per share of the Company's common stock (in dollars per share)					$ 48.55	$ 45.45
Consideration transferred				$ 8,900,000	$ 12,500,000							$ 82,981,000
Contingent consideration, maximum				$ 5,800,000			$ 5,800,000					$ 5,800,000
Contingent consideration paid													$ 1,200,000
Number of shares registered for resale or other disposition (in shares)															944,586
Common Stock Repurchase Program, October 2020 Expiration
Subsidiary, Sale of Stock [Line Items]
Authorized repurchase amount														$ 100,000,000.0
Number of shares repurchased (in shares)								0		0
Common Stock Repurchase Program, October 2019 Expiration
Subsidiary, Sale of Stock [Line Items]
Repurchase amount										$ 10,600,000