Other asset and other liabilities - Intangible assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Goodwill	$ 49,091		$ 49,091		$ 38,530
Amortized intangible assets
Accumulated Amortization	8,184		8,184		6,471
Net Carrying Value	25,204		25,204
Total intangible assets
Gross Carrying Amount	36,888		36,888		24,220
Total Intangible Assets	28,704		28,704		17,749
Amortization expense	900	$ 400	1,700	$ 800
Trade name
Unamortized intangible assets
Indefinite-lived intangible assets	2,500		2,500		2,500
SBA license
Unamortized intangible assets
Indefinite-lived intangible assets	1,000		1,000		1,000
LMM Commercial Real Estate
Goodwill	27,324		27,324		27,324
Small Business Lending
Goodwill	21,767		21,767		11,206
Customer relationships
Amortized intangible assets
Gross Carrying Amount	6,799		6,799		6,800
Accumulated Amortization	1,043		1,043		865
Net Carrying Value	5,756		5,756		5,935
Internally developed software
Amortized intangible assets
Gross Carrying Amount	14,107		14,107		11,840
Accumulated Amortization	5,161		5,161		3,884
Net Carrying Value	8,946		8,946		7,956
Broker network
Amortized intangible assets
Gross Carrying Amount	9,300		9,300
Accumulated Amortization	1,284		1,284
Net Carrying Value	8,016		8,016
Other
Amortized intangible assets
Gross Carrying Amount	3,182		3,182		2,080
Accumulated Amortization	696		696		1,722
Net Carrying Value	$ 2,486		$ 2,486		$ 358