CONDENSED FINANCIAL INFORMATION OF AMERIS BANCORP (PARENT COMPANY ONLY) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and due from banks	$ 127,164	$ 118,518
Other assets	88,697	52,545
Total assets	6,892,031	5,588,940	$ 4,037,077
Liabilities
Other liabilities	34,064	22,432
Other borrowings	492,321	39,000
Subordinated deferrable interest debentures	84,228	69,874
Total liabilities	6,245,594	5,074,181
Stockholders’ equity	646,437	514,759	366,028
Total liabilities and stockholders’ equity	6,892,031	5,588,940
Parent Company [Member]
Assets
Cash and due from banks	457	5,847	$ 868	$ 3,550
Investment in subsidiaries	767,682	617,134
Other assets	7,706	6,717
Total assets	775,845	629,698
Liabilities
Other liabilities	6,330	6,065
Other borrowings	38,850	39,000
Subordinated deferrable interest debentures	84,228	69,874
Total liabilities	129,408	114,939
Stockholders’ equity	646,437	514,759
Total liabilities and stockholders’ equity	$ 775,845	$ 629,698