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Subordinated Debt (Tables)
9 Months Ended
Sep. 30, 2021
Debt Disclosure [Abstract]  
Schedule of Subordinated Borrowing
September 30, 2021December 31, 2020
(in thousands)PrincipalUnamortized Debt Issuance CostsPrincipalUnamortized Debt Issuance Costs
2025 Note— — 10,000 (114)
2026 Notes— — 25,000 (715)
2029 Notes37,000 (1,218)37,000 (1,337)
2030 Notes10,000 (213)10,000 (231)
2031 Notes$60,000 $(1,413)$— $— 
Total$107,000 $(2,844)$82,000 $(2,397)