Bank segment - Gross Charge-Offs by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			$ 398
Charge offs one years prior of origination year			1,969
Charge offs two years prior of origination year			3,164
Charge offs three years prior of origination year			572
Charge offs four years prior of origination year			75
Charge offs more than five years prior of origination year			623
Total	$ 3,126	$ 3,203	6,801	$ 6,625
Commercial
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			0
Charge offs one years prior of origination year			0
Charge offs two years prior of origination year			0
Charge offs three years prior of origination year			14
Charge offs four years prior of origination year			0
Charge offs more than five years prior of origination year			226
Total	126	157	240	384
Consumer
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			398
Charge offs one years prior of origination year			1,969
Charge offs two years prior of origination year			2,803
Charge offs three years prior of origination year			281
Charge offs four years prior of origination year			75
Charge offs more than five years prior of origination year			193
Total	$ 3,000	$ 2,568	5,719	$ 4,891
Residential 1-4 family
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			0
Charge offs one years prior of origination year			0
Charge offs two years prior of origination year			361
Charge offs three years prior of origination year			277
Charge offs four years prior of origination year			0
Charge offs more than five years prior of origination year			204
Total			842
Commercial real estate
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			0
Charge offs one years prior of origination year			0
Charge offs two years prior of origination year			0
Charge offs three years prior of origination year			0
Charge offs four years prior of origination year			0
Charge offs more than five years prior of origination year			0
Total			0
Home equity line of credit
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			0
Charge offs one years prior of origination year			0
Charge offs two years prior of origination year			0
Charge offs three years prior of origination year			0
Charge offs four years prior of origination year			0
Charge offs more than five years prior of origination year			0
Total			0
Residential land
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			0
Charge offs one years prior of origination year			0
Charge offs two years prior of origination year			0
Charge offs three years prior of origination year			0
Charge offs four years prior of origination year			0
Charge offs more than five years prior of origination year			0
Total			0
Commercial construction
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			0
Charge offs one years prior of origination year			0
Charge offs two years prior of origination year			0
Charge offs three years prior of origination year			0
Charge offs four years prior of origination year			0
Charge offs more than five years prior of origination year			0
Total			0
Residential construction
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			0
Charge offs one years prior of origination year			0
Charge offs two years prior of origination year			0
Charge offs three years prior of origination year			0
Charge offs four years prior of origination year			0
Charge offs more than five years prior of origination year			0
Total			$ 0