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Parent Company Income Statement (Details) - USD ($)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Expenses      
Interest expense $ 29,591,000 $ 13,717,000 $ 34,341,000
Income tax benefit 83,941,000 35,683,000 31,669,000
Net Income 263,813,000 120,992,000 121,167,000
Parent Company [Member]      
Income      
Dividend Income, Operating [1] 209,257,000 77,673,000 166,033,000
Total income 209,257,000 77,673,000 166,033,000
Expenses      
Interest expense 4,626,000 4,493,000 5,432,000
Other Expenses 1,680,000 0 0
Total expenses 6,306,000 4,493,000 5,432,000
Income before income taxes and equity in undistributed income of subsidiaries 202,951,000 73,180,000 160,601,000
Income tax benefit (1,731,000) (1,241,000) (1,499,000)
Income of parent company 204,682,000 74,421,000 162,100,000
Equity (deficit) in undistributed income of subsidiaries 59,131,000 46,571,000 (40,933,000)
Net Income $ 263,813,000 $ 120,992,000 $ 121,167,000
[1] Majority of balance eliminates in consolidation.