Fair value estimates - Carrying and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Investment securities:
Available-for-sale	$ 395,826	$ 477,703
Common equity securities	92	110
Held-to-maturity	74,013	76,563
Mortgage servicing rights	896	914
Financial liabilities:
Subordinated debentures	33,000	33,000
Carrying Value
Financial assets:
Cash and due from banks	136,688	37,868
Investment securities:
Available-for-sale	395,826	477,703
Common equity securities	92	110
Held-to-maturity	88,211	91,179
Net loans	2,820,020	2,702,644
Accrued interest receivable	11,406	11,715
Mortgage servicing rights	896	914
Restricted equity securities (FHLB and other)	4,538	9,630
Interest rate floor	283	1
Interest rate swaps	21,523	21,794
Total assets	3,479,483	3,353,558
Financial liabilities:
Deposits	3,229,481	3,046,598
Short-term borrowings	19,530	114,930
Long-term debt	25,000	555
Subordinated debentures	33,000	33,000
Accrued interest payable	4,701	903
Interest rate floor	237
Interest rate swap	20,930	21,466
Total liabilities	3,332,879	3,217,452
Fair Value
Financial assets:
Cash and due from banks	136,688	37,868
Investment securities:
Available-for-sale	395,826	477,703
Common equity securities	92	110
Held-to-maturity	74,013	76,563
Net loans	2,617,233	2,562,780
Accrued interest receivable	11,406	11,715
Mortgage servicing rights	1,727	1,762
Restricted equity securities (FHLB and other)	4,538	9,630
Interest rate floor	283	1
Interest rate swaps	21,523	21,794
Total assets	3,263,329	3,199,926
Financial liabilities:
Deposits	3,221,730	3,035,615
Short-term borrowings	19,530	114,743
Long-term debt	24,676	555
Subordinated debentures	31,944	53,998
Accrued interest payable	4,701	903
Interest rate floor	237
Interest rate swap	20,930	21,466
Total liabilities	3,323,748	3,227,280
Level 1
Financial assets:
Cash and due from banks	136,688	37,868
Investment securities:
Available-for-sale	179,104	180,297
Common equity securities	92	110
Level 2
Investment securities:
Available-for-sale	216,722	294,706
Held-to-maturity	74,013	76,563
Accrued interest receivable	11,406	11,715
Mortgage servicing rights	1,727	1,762
Restricted equity securities (FHLB and other)	4,538	9,630
Interest rate floor	283	1
Interest rate swaps	21,523	21,794
Financial liabilities:
Deposits	3,221,730	3,035,615
Short-term borrowings	19,530	114,743
Long-term debt	24,676	555
Subordinated debentures	31,944	53,998
Accrued interest payable	4,701	903
Interest rate floor	237
Interest rate swap	20,930	21,466
Level 3
Investment securities:
Net loans	$ 2,617,233	$ 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.