Fair value estimates - Carrying and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Investment securities:
Available-for-sale	$ 382,227	$ 477,703
Common equity securities	92	110
Held-to-maturity	68,808	76,563
Mortgage servicing rights	885	914
Financial liabilities:
Subordinated debentures	33,000	33,000
Carrying Value
Financial assets:
Cash and due from banks	254,535	37,868
Investment securities:
Available-for-sale	382,227	477,703
Common equity securities	92	110
Held-to-maturity	86,246	91,179
Net loans	2,847,959	2,702,644
Accrued interest receivable	12,769	11,715
Mortgage servicing rights	885	914
Restricted equity securities (FHLB and other)	5,664	9,630
Interest rate floor	772	1
Interest rate swaps	26,153	21,794
Total assets	3,617,302	3,353,558
Financial liabilities:
Deposits	3,365,083	3,046,598
Short-term borrowings	27,020	114,930
Long-term debt	25,000	555
Subordinated debentures	33,000	33,000
Accrued interest payable	4,777	903
Interest rate swap	25,366	21,466
Total liabilities	3,480,246	3,217,452
Fair Value
Financial assets:
Cash and due from banks	254,535	37,868
Investment securities:
Available-for-sale	382,227	477,703
Common equity securities	92	110
Held-to-maturity	68,808	76,563
Net loans	2,622,689	2,562,780
Accrued interest receivable	12,769	11,715
Mortgage servicing rights	1,706	1,762
Restricted equity securities (FHLB and other)	5,664	9,630
Interest rate floor	772	1
Interest rate swaps	26,153	21,794
Total assets	3,375,415	3,199,926
Financial liabilities:
Deposits	3,358,194	3,035,615
Short-term borrowings	27,020	114,743
Long-term debt	24,598	555
Subordinated debentures	31,858	53,998
Accrued interest payable	4,777	903
Interest rate swap	25,366	21,466
Total liabilities	3,471,814	3,227,280
Level 1
Financial assets:
Cash and due from banks	254,535	37,868
Investment securities:
Available-for-sale	179,146	180,297
Common equity securities	92	110
Level 2
Investment securities:
Available-for-sale	203,081	294,706
Held-to-maturity	68,808	76,563
Accrued interest receivable	12,769	11,715
Mortgage servicing rights	1,706	1,762
Restricted equity securities (FHLB and other)	5,664	9,630
Interest rate floor	772	1
Interest rate swaps	26,153	21,794
Financial liabilities:
Deposits	3,358,194	3,035,615
Short-term borrowings	27,020	114,743
Long-term debt	24,598	555
Subordinated debentures	31,858	53,998
Accrued interest payable	4,777	903
Interest rate swap	25,366	21,466
Level 3
Investment securities:
Net loans	$ 2,622,689	$ 2,562,780

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents accrued interest payable as of the balance sheet date.

No definition available.