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Business and Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Adjustment to stockholders' equity $ 986,136 $ 1,737,259 $ 1,760,708 $ 1,728,004
Financing Receivable, Allowance for Credit Loss 42,127 14,911 12,970  
Revision of Prior Period, Accounting Standards Update, Adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Financing Receivable, Allowance for Credit Loss   9,463 0  
Cumulative Effect, Period of Adoption, Adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Adjustment to stockholders' equity   (6,715) 2,592 (1,729)
Retained Earnings        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Adjustment to stockholders' equity $ 1,236,378 2,029,613 2,005,344 1,819,524
Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Adjustment to stockholders' equity   $ (6,715) $ 2,592 $ (1,729)