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Notes Payable and Amounts Due Under Repurchase Agreements (Tables)
12 Months Ended
Dec. 31, 2021
Debt Disclosure [Abstract]  
Schedule of Notes Payable
Notes payable includes the following:
December 31,
20212020
(Dollars in thousands)
Senior notes due 2027
Principal$500,000 $500,000 
Unamortized debt issue costs(3,537)(4,086)
Unamortized discount(213)(246)
$496,250 $495,668