Bank segment - Credit risk profile - nonaccrual loans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2022	Dec. 31, 2021
Credit risk profile based on nonaccrual loans
With a Related ACL	$ 16,587	$ 37,764
Without a Related ACL	5,292	7,210
Total	21,879	44,974
Total troubled debt restructuring loans not included above	30,573	24,917
Real estate \| Residential 1-4 family
Credit risk profile based on nonaccrual loans
With a Related ACL	11,487	16,045
Without a Related ACL	3,571	3,703
Total	15,058	19,748
Total troubled debt restructuring loans not included above	7,690	6,949
Real estate \| Commercial real estate
Credit risk profile based on nonaccrual loans
With a Related ACL	0	14,104
Without a Related ACL	0	1,221
Total	0	15,325
Total troubled debt restructuring loans not included above	10,031	3,055
Real estate \| Home equity line of credit
Credit risk profile based on nonaccrual loans
With a Related ACL	3,225	4,227
Without a Related ACL	725	1,294
Total	3,950	5,521
Total troubled debt restructuring loans not included above	5,037	6,021
Real estate \| Residential land
Credit risk profile based on nonaccrual loans
With a Related ACL	205	97
Without a Related ACL	97	300
Total	302	397
Total troubled debt restructuring loans not included above	920	980
Real estate \| Commercial construction
Credit risk profile based on nonaccrual loans
With a Related ACL	0	0
Without a Related ACL	0	0
Total	0	0
Total troubled debt restructuring loans not included above	0	0
Real estate \| Residential construction
Credit risk profile based on nonaccrual loans
With a Related ACL	0	0
Without a Related ACL	0	0
Total	0	0
Total troubled debt restructuring loans not included above	0	0
Commercial
Credit risk profile based on nonaccrual loans
With a Related ACL	240	1,446
Without a Related ACL	899	692
Total	1,139	2,138
Total troubled debt restructuring loans not included above	6,844	7,860
Consumer
Credit risk profile based on nonaccrual loans
With a Related ACL	1,430	1,845
Without a Related ACL	0	0
Total	1,430	1,845
Total troubled debt restructuring loans not included above	$ 51	$ 52

Financing Receivable, Nonaccrual, With Allowance

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- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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- Definition

Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. 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 16
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (3)

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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