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Bank segment - Credit risk profile - payment activity (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Credit risk profile based on payment activity for loans
Financing receivable, past due	$ 22,772	$ 19,635
Financing receivable, current	5,302,998	5,325,591
Total	5,325,770	5,345,226
Recorded Investment greater than 90 days and accruing	0	0
Real estate
Credit risk profile based on payment activity for loans
Total	4,167,255	4,239,745
Real estate | Residential 1-4 family
Credit risk profile based on payment activity for loans
Financing receivable, past due	11,996	8,134
Financing receivable, current	2,095,541	2,136,105
Total	2,107,537	2,144,239
Recorded Investment greater than 90 days and accruing	0	0
Real estate | Commercial real estate
Credit risk profile based on payment activity for loans
Financing receivable, past due	1,681	488
Financing receivable, current	1,011,287	983,377
Total	1,012,968	983,865
Recorded Investment greater than 90 days and accruing	0	0
Real estate | Home equity line of credit
Credit risk profile based on payment activity for loans
Financing receivable, past due	3,554	3,244
Financing receivable, current	897,908	960,334
Total	901,462	963,578
Recorded Investment greater than 90 days and accruing	0	0
Real estate | Residential land
Credit risk profile based on payment activity for loans
Financing receivable, past due	999	1,002
Financing receivable, current	16,469	14,615
Total	17,468	15,617
Recorded Investment greater than 90 days and accruing	0	0
Real estate | Commercial construction
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
Financing receivable, current	114,455	121,424
Total	114,455	121,424
Recorded Investment greater than 90 days and accruing	0	0
Real estate | Residential construction
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
Financing receivable, current	13,365	11,022
Total	13,365	11,022
Recorded Investment greater than 90 days and accruing	0	0
Commercial
Credit risk profile based on payment activity for loans
Financing receivable, past due	266	1,040
Financing receivable, current	1,009,738	935,708
Total	1,010,004	936,748
Recorded Investment greater than 90 days and accruing	0	0
Consumer
Credit risk profile based on payment activity for loans
Financing receivable, past due	4,276	5,727
Financing receivable, current	144,235	163,006
Total	148,511	168,733
Recorded Investment greater than 90 days and accruing	0	0
30-59 days past due
Credit risk profile based on payment activity for loans
Financing receivable, past due	7,659	7,394
30-59 days past due | Real estate | Residential 1-4 family
Credit risk profile based on payment activity for loans
Financing receivable, past due	2,361	2,629
Total	2,361	2,629
30-59 days past due | Real estate | Commercial real estate
Credit risk profile based on payment activity for loans
Financing receivable, past due	1,681	0
30-59 days past due | Real estate | Home equity line of credit
Credit risk profile based on payment activity for loans
Financing receivable, past due	1,132	850
Total	1,132	850
30-59 days past due | Real estate | Residential land
Credit risk profile based on payment activity for loans
Financing receivable, past due	699	702
Total	699	702
30-59 days past due | Real estate | Commercial construction
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
30-59 days past due | Real estate | Residential construction
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
Total	0	0
30-59 days past due | Commercial
Credit risk profile based on payment activity for loans
Financing receivable, past due	146	608
30-59 days past due | Consumer
Credit risk profile based on payment activity for loans
Financing receivable, past due	1,640	2,605
Total	1,640	2,605
60-89 days past due
Credit risk profile based on payment activity for loans
Financing receivable, past due	7,220	5,411
60-89 days past due | Real estate | Residential 1-4 family
Credit risk profile based on payment activity for loans
Financing receivable, past due	5,403	2,790
Total	5,403	2,790
60-89 days past due | Real estate | Commercial real estate
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	488
60-89 days past due | Real estate | Home equity line of credit
Credit risk profile based on payment activity for loans
Financing receivable, past due	334	342
Total	334	342
60-89 days past due | Real estate | Residential land
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
Total	0	0
60-89 days past due | Real estate | Commercial construction
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
60-89 days past due | Real estate | Residential construction
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
Total	0	0
60-89 days past due | Commercial
Credit risk profile based on payment activity for loans
Financing receivable, past due	47	300
60-89 days past due | Consumer
Credit risk profile based on payment activity for loans
Financing receivable, past due	1,436	1,491
Total	1,436	1,491
Greater than 90 days
Credit risk profile based on payment activity for loans
Financing receivable, past due	7,893	6,830
Greater than 90 days | Real estate | Residential 1-4 family
Credit risk profile based on payment activity for loans
Financing receivable, past due	4,232	2,715
Total	4,232	2,715
Greater than 90 days | Real estate | Commercial real estate
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
Greater than 90 days | Real estate | Home equity line of credit
Credit risk profile based on payment activity for loans
Financing receivable, past due	2,088	2,052
Total	2,088	2,052
Greater than 90 days | Real estate | Residential land
Credit risk profile based on payment activity for loans
Financing receivable, past due	300	300
Total	300	300
Greater than 90 days | Real estate | Commercial construction
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
Greater than 90 days | Real estate | Residential construction
Credit risk profile based on payment activity for loans
Financing receivable, past due	0	0
Total	0	0
Greater than 90 days | Commercial
Credit risk profile based on payment activity for loans
Financing receivable, past due	73	132
Greater than 90 days | Consumer
Credit risk profile based on payment activity for loans
Financing receivable, past due	1,200	1,631
Total	$ 1,200	$ 1,631

X

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Amount of financing receivable 90 days or more past due and still accruing.

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