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Long-Term Debt (Tables)
12 Months Ended
Dec. 31, 2023
Debt Disclosure [Abstract]  
Schedule of Long-Term Debt
Long-term debt consists of the following as of the dates presented (in thousands):
As of December 31,
20232022
Surplus note$4,044 $5,515 
5.625% Senior unsecured notes
100,000 100,000 
Total principal amount104,044 105,515 
Less: unamortized debt issuance costs
(2,038)(2,746)
Total long-term debt, net$102,006 $102,769 
Summary of Estimate of Principal Payments to Be Made for the Amount Due on the Surplus Note
The following table provides an estimate of aggregate principal payments to be made for the amounts due on long-term debt as of December 31, 2023 (in thousands):
2024$1,471 
20251,471 
2026101,102 
2027— 
2028— 
Thereafter— 
Total long-term debt maturities104,044 
Less: unamortized debt issuance costs(2,038)
Total long-term debt maturities, net$102,006 
Schedule of Interest Expense
The following table provides interest expense related to long-term debt during the periods presented (in thousands):
Years Ended December 31,
202320222021
Interest Expense:
Surplus notes$198 $172 $113 
5.625% Senior unsecured notes
5,625 5,734 469 
Non-cash expense (1)708 703 56 
Total $6,531 $6,609 $638 
(1) Represents amortization of debt issuance costs.