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Shareholders' Equity - Dividends and Share Repurchases (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dividends      
Dividends declared and paid by subsidiary   $ 7,679,000 $ 15,622,000
Dividends declared and paid during the period $ 5,638,000 $ 5,757,000 $ 5,530,000
Dividends declared, per share $ 0.48 $ 0.47 $ 0.44
Class of Stock [Line Items]      
Payments of Dividends $ 38,000,000    
California      
Class of Stock [Line Items]      
Dividends available for distribution free of restrictions $ 69,699,000