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Portfolio Loans - Schedule of activity on the allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Activity in the allowance for loan losses
ACL beginning balance	$ 91,608	$ 87,887
Provision for credit losses	953	(253)
Charged-off	(1,181)	(125)
Recoveries	347	704
ACL ending balance	91,727	88,213
Commercial
Activity in the allowance for loan losses
ACL beginning balance	23,860	23,855
Provision for credit losses	695	251
Charged-off	(400)	0
Recoveries	121	67
ACL ending balance	24,276	24,173
Commercial real estate
Activity in the allowance for loan losses
ACL beginning balance	38,299	38,249
Provision for credit losses	(3,359)	(1,218)
Charged-off	(539)	0
Recoveries	20	308
ACL ending balance	34,421	37,339
Real estate construction
Activity in the allowance for loan losses
ACL beginning balance	6,457	5,102
Provision for credit losses	(1,329)	510
Charged-off	0	0
Recoveries	31	93
ACL ending balance	5,159	5,705
Retail real estate
Activity in the allowance for loan losses
ACL beginning balance	18,193	17,589
Provision for credit losses	5,948	(170)
Charged-off	(5)	(16)
Recoveries	119	152
ACL ending balance	24,255	17,555
Retail other
Activity in the allowance for loan losses
ACL beginning balance	4,799	3,092
Provision for credit losses	(1,002)	374
Charged-off	(237)	(109)
Recoveries	56	84
ACL ending balance	$ 3,616	$ 3,441

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

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- Definition

Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (e)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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- Definition

Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447

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