SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation arrangement with individual, shares authorized for issuance (in shares)	2,766,302
Deferred compensation arrangement with individual, shares issued (in shares)	2,067,280
Granted (in shares)	0	0	0
Unrecognized compensation cost	$ 0
Share-based compensation expense	$ 12,688,000	$ 13,440,000	$ 9,950,000
Weighted-average period (in years)	1 year 8 months 12 days
Effect of dilutive restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding restricted shares granted (in shares)	226,838	268,966	257,673
Share-based compensation expense	$ 5,200,000	$ 5,700,000	$ 5,300,000
Employee service share-based compensation, tax benefit from compensation expense	1,000,000.0	164,000	770,000
Unearned stock based compensation expense	$ 6,100,000
Effect of dilutive restricted stock awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	1 year
Effect of dilutive restricted stock awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	3 years
Effect of dilutive stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0	$ 0	0
Employee service share-based compensation, tax benefit from compensation expense	$ 0		$ 41,000
PSUs, Tied To Tangible Book Value Growth
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	32,385	43,960
Vesting period (in years)	3 years
Granted (in dollars per shares)	$ 67.20	$ 47.38
PSUs, Tied To Total Shareholder Return
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	32,391	43,969
Vesting period (in years)	3 years
Granted (in dollars per shares)	$ 67.20	$ 47.38
Effect of performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding restricted shares granted (in shares)	152,705	168,785	146,612
Vesting period (in years)	3 years
Share-based compensation expense	$ 7,500,000	$ 7,800,000	$ 4,600,000
Unearned stock based compensation expense	$ 5,500,000	$ 6,200,000	$ 4,400,000
Weighted-average period (in years)	1 year 6 months

Ameris Bancorp 10-K