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Long-term Debt (Tables)
 3 Months Ended
Mar. 31, 2024
Debt Disclosure [Abstract]  
Schedule of Debt
Long-term debt consists of the following as of the dates presented (in thousands):
March 31,December 31,
20242023
Surplus note$3,676 $4,044 
5.625% Senior unsecured notes
100,000 100,000 
Total principal amount103,676 104,044 
Less: unamortized debt issuance costs(1,861)(2,038)
Total long-term debt, net$101,815 $102,006 
Schedule of Interest Expense
The following table provides interest expense related to long-term debt during the periods presented (in thousands):

Three Months Ended
March 31,
20242023
Interest Expense:
Surplus note
$39 $53 
5.625% Senior unsecured notes
1,406 1,406 
Non-cash expense (1)
177 177 
Total
$1,622 $1,636 
(1) Represents amortization of debt issuance costs.