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Borrowings - Schedule of unamortized debt issuance cost (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Total unamortized debt issuance costs	$ 3,165	$ 2,283
Senior notes issued in 2017 | Senior Notes
Debt Instrument [Line Items]
Total unamortized debt issuance costs	0	56
Subordinated notes issued in 2017 | Subordinated Debt
Debt Instrument [Line Items]
Total unamortized debt issuance costs	0	549
Subordinated notes issued in 2020 | Subordinated Debt
Debt Instrument [Line Items]
Total unamortized debt issuance costs	1,337	1,678
Subordinated notes issued in 2022 | Subordinated Debt
Debt Instrument [Line Items]
Total unamortized debt issuance costs	$ 1,828	$ 0

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+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 1D
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399

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