COMMITMENTS AND CONTINGENCIES (Details Textual) - USD ($) $ in Millions	Aug. 08, 2013	Mar. 31, 2017
Litigation Settlement, Amount	$ 2.9
Federal Home Loan Bank [Member] \| Letter of Credit [Member]
Letter of Credit		$ 75.0

This element represents the amount of letter of credit issued by a financial institution which acts as a guarantee of payment to a beneficiary, or as the source of payment for a specific transaction.

No definition available.

Name:	abcb_LetterOfCredit
Namespace Prefix:	abcb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant