Bank segment - Gross Charge-Offs by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			$ 733
Charge offs one years prior of origination year			2,853
Charge offs two years prior of origination year			4,702
Charge offs three years prior of origination year			821
Charge offs four years prior of origination year			102
Charge offs more than five years prior of origination year			717
Total	$ 3,127	$ 2,792	9,928	$ 9,417
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			12
Charge offs three years prior of origination year			63
Charge offs four years prior of origination year			0
Charge offs more than five years prior of origination year			285
Total	120	125	360	509
Consumer
Credit risk profile by internally assigned grade for loans
Charge offs current fiscal year of origination			733
Charge offs one years prior of origination year			2,853
Charge offs two years prior of origination year			4,329
Charge offs three years prior of origination year			481
Charge offs four years prior of origination year			102
Charge offs more than five years prior of origination year			220
Total	$ 2,999	$ 2,667	8,718	$ 7,558
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			212
Total			850
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