BUSINESS COMBINATIONS (Details Textual) - USD ($) $ in Thousands		3 Months Ended
	Mar. 11, 2016	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Goodwill, excess of the merger consideration over fair value of net assets		$ 125,532	$ 121,512	$ 125,532
Issuance of common stock, fair value		$ 0	$ 72,455
Description of Merger Agreement	Under the terms of the merger, JAXB’s common shareholders received 0.5861 shares of Ameris common stock or $16.50 in cash for each share of JAXB common stock or nonvoting common stock they previously held, subject to the total consideration being allocated 75% stock and 25% cash. As a result, the Company issued 2,549,469 common shares at a fair value of $72.5 million and paid $23.9 million in cash to former shareholders of JAXB.
Jacksonville Bancorp, Inc [Member]
Goodwill, excess of the merger consideration over fair value of net assets	$ 0
Issuance of common stock, shares	2,549,469
Issuance of common stock, fair value	$ 72,455
Discount on loans acquired	$ 15,200
Percentage of discount on loans acquired	3.64%
Purchased Credit Impaired Loans Fair Value	$ 27,000
Total Loans Acquired Fair Value	401,600
Cash Paid To Former Shareholders	23,900
Jacksonville Bancorp, Inc [Member] | As Recorded by Acquired Bank [Member]
Goodwill, excess of the merger consideration over fair value of net assets	$ 35,485