Fair value of financial instruments - Carrying and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investment securities:
Available-for-sale	$ 517,321	$ 295,911
Common equity securities	140	138
Held-to-maturity	70,446	7,513
Loans held for sale	408	837
Mortgage servicing rights	882	838
Financial liabilities:
Subordinated debentures	33,000	33,000
Carrying Value
Financial assets:
Cash and due from banks	279,933	228,192
Investment securities:
Available-for-sale	517,321	295,911
Common equity securities	140	138
Held-to-maturity	71,213	7,225
Loans held for sale	408	837
Net loans	2,300,790	2,150,638
Accrued interest receivable	8,528	8,255
Mortgage servicing rights	882	838
Restricted equity securities (FHLB and other)	4,045	5,397
Interest rate floor	844	1,678
Interest rate swaps	9,026	13,693
Total assets	3,193,130	2,712,802
Financial liabilities:
Deposits	2,963,397	2,437,113
Long-term debt	2,711	14,769
Subordinated debentures	33,000	33,000
Accrued interest payable	408	736
Interest rate swap	8,811	14,099
Total liabilities	3,008,327	2,499,717
Fair Value
Financial assets:
Cash and due from banks	279,933	228,192
Investment securities:
Available-for-sale	517,321	295,911
Common equity securities	140	138
Held-to-maturity	70,446	7,513
Loans held for sale	408	837
Net loans	2,261,586	2,145,752
Accrued interest receivable	8,528	8,255
Mortgage servicing rights	1,357	1,269
Restricted equity securities (FHLB and other)	4,045	5,397
Interest rate floor	844	1,678
Interest rate swaps	9,026	13,693
Total assets	3,153,634	2,708,635
Financial liabilities:
Deposits	2,963,547	2,441,014
Long-term debt	2,778	15,073
Subordinated debentures	32,337	33,096
Accrued interest payable	408	736
Interest rate swap	8,811	14,099
Total liabilities	3,007,881	2,504,018
Level 1
Financial assets:
Cash and due from banks	279,933	228,192
Investment securities:
Available-for-sale	191,574	18,905
Common equity securities	140	138
Level 2
Investment securities:
Available-for-sale	325,747	277,006
Held-to-maturity	70,446	7,513
Loans held for sale	408	837
Accrued interest receivable	8,528	8,255
Mortgage servicing rights	1,357	1,269
Restricted equity securities (FHLB and other)	4,045	5,397
Interest rate floor	844	1,678
Interest rate swaps	9,026	13,693
Financial liabilities:
Deposits	2,963,547	2,441,014
Long-term debt	2,778	15,073
Subordinated debentures	32,337	33,096
Accrued interest payable	408	736
Interest rate swap	8,811	14,099
Level 3
Investment securities:
Net loans	$ 2,261,586	$ 2,145,752

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.