Quarterly report pursuant to Section 13 or 15(d)

ACCOUNTING POLICIES - New Accounting Standards (Narrative) (Details)

v3.20.2
ACCOUNTING POLICIES - New Accounting Standards (Narrative) (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2020
Jun. 30, 2020
Jan. 01, 2020
Dec. 31, 2019
Sep. 30, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Allowance for credit losses on loans $ 174,122 $ 169,977 $ 89,778 $ 42,294 $ 43,820 $ 41,045
Available for sale securities, allowance for credit losses 0          
Decrease in retained earnings 579,269     $ 581,395    
Increase in allowance for credit losses on Purchased with Credit Deterioration (PCD) assets 2,386          
Accounting Standards Update 2016-13            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Allowance for credit losses     2,400      
Restatement Adjustment | Accounting Standards Update 2016-13            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Allowance for credit losses on loans     $ 47,484      
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Decrease in retained earnings $ (39,100)