XML 60 R47.htm IDEA: XBRL DOCUMENT v3.20.2
Acquisition (Narrative) (Details) - Capital City Bancshares, Inc. [Member] - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
12 Months Ended
Aug. 31, 2018
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Business Acquisition [Line Items]        
Fair value of loans acquired $ 299,700      
Fair value of deposits acquired 352,500      
PCI loans, contractually required payments receivable at acquisition 2,600      
PCI loans, cash flows expected to be collected at acquisition $ 1,900      
Number of common stock shares issued 3.0      
Total merger consideration $ 39,100      
Closing stock price $ 13.21      
Regulatory and Outside Services [Member]        
Business Acquisition [Line Items]        
Merger-related expenses incurred   $ 0 $ 30 $ 872