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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

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- Definition 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. + References No definition available. + Details
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- Definition 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 receivable as of the balance sheet date. + References No definition available. + Details
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- Definition Mortgage servicing rights (MSR) refer to a contractual agreement where the right, or rights, to service an existing mortgage are sold by the original lender to another party who specializes in the various functions of servicing mortgages. + References No definition available. + Details
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 + Details
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=SL120269820-111563 + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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- Definition The fair value amount of long-term debt 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. + References No definition available. + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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