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Changes In Accumulated Other Comprehensive Income (Loss) By Component (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Shareholders' equity $ 1,366,217 $ 1,117,086 $ 1,052,795 $ 956,816
Unrealized gains (losses) arising during period, before tax 5,480 501    
Income tax effect (1,425) 155    
Other comprehensive income (loss) before reclassifications 4,055 656    
Reclassification adjustments for losses (gains) included in net income, before tax (4,420) (6,986)    
Income, tax effect 1,149 1,816    
Amounts reclassified from accumulated other comprehensive income (loss) to net income (3,271) (5,170)    
Other comprehensive income (loss), net of income tax effect 784 (4,514) 21,413  
Ending balance 1,366,217 1,117,086 1,052,795  
Total        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Shareholders' equity (4,980) (5,764) (1,250) $ (22,663)
Other comprehensive income (loss), net of income tax effect 784 (4,514) 21,413  
Ending balance (4,980) (5,764) (1,250)  
Unrealized Gains (Losses) on AFS Securities        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Shareholders' equity (4,980) 23,312 14,287  
Unrealized gains (losses) arising during period, before tax (6,841) 32,273    
Income tax effect 1,779 (8,390)    
Other comprehensive income (loss) before reclassifications (5,062) 23,883    
Reclassification adjustments for losses (gains) included in net income, before tax (31,392) (20,078)    
Income, tax effect 8,162 5,220    
Amounts reclassified from accumulated other comprehensive income (loss) to net income (23,230) (14,858)    
Other comprehensive income (loss), net of income tax effect (28,292) 9,025    
Ending balance (4,980) 23,312 14,287  
Unrealized Gains (Losses) on Cash Flow Hedges        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Shareholders' equity 0 (29,076) (15,537)  
Unrealized gains (losses) arising during period, before tax 12,321 (31,772)    
Income tax effect (3,204) 8,545    
Other comprehensive income (loss) before reclassifications 9,117 (23,227)    
Reclassification adjustments for losses (gains) included in net income, before tax 26,972 13,092    
Income, tax effect (7,013) (3,404)    
Amounts reclassified from accumulated other comprehensive income (loss) to net income 19,959 9,688    
Other comprehensive income (loss), net of income tax effect 29,076 (13,539)    
Ending balance $ 0 $ (29,076) $ (15,537)