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Fair value estimates - Carrying and Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Investment securities: |  |
Available-for-sale | $ 261,665 | $ 269,682
Common equity securities | 283 | 291
Held-to-maturity | 8,151 | 8,380
Loans held for sale | 831 | 749
Mortgage servicing rights | 719 | 718
Other assets | 67,625 | 63,737
Carrying Value |  |
Financial assets: |  |
Cash and cash equivalents | 29,962 | 32,616
Investment securities: |  |
Available-for-sale | 261,665 | 269,682
Common equity securities | 283 | 291
Held-to-maturity | 7,969 | 8,361
Loans held for sale |  | 749
Net loans | 1,836,869 | 1,801,887
Accrued interest receivable | 7,303 | 7,115
Mortgage servicing rights | 719 | 718
Restricted equity securities | 7,833 | 7,462
Interest rate floor | 1,025 | 553
Interest rate swaps | 3,807 | 108
Total assets | 2,157,435 | 2,129,542
Financial liabilities: |  |
Deposits | 1,876,799 | 1,875,022
Short-term borrowings | 82,700 | 86,500
Long-term debt | 52,980 | 37,906
Accrued interest payable | 1,058 | 1,195
Interest rate swap | 4,182 | 138
Total liabilities | 2,017,719 | 2,000,761
Fair Value |  |
Financial assets: |  |
Cash and cash equivalents | 29,962 | 32,616
Investment securities: |  |
Available-for-sale | 261,665 | 269,682
Common equity securities | 283 | 291
Held-to-maturity | 8,151 | 8,380
Loans held for sale |  | 749
Net loans | 1,830,139 | 1,762,449
Accrued interest receivable | 7,303 | 7,115
Mortgage servicing rights | 1,712 | 1,710
Restricted equity securities | 7,833 | 7,462
Interest rate floor | 1,025 | 553
Interest rate swaps | 3,807 | 108
Total assets | 2,151,880 | 2,091,115
Financial liabilities: |  |
Deposits | 1,862,246 | 1,874,520
Short-term borrowings | 82,700 | 86,500
Long-term debt | 53,338 | 38,071
Accrued interest payable | 1,058 | 1,195
Interest rate swap | 4,182 | 138
Total liabilities | 2,003,524 | 2,000,424
Level 1 |  |
Financial assets: |  |
Cash and cash equivalents | 29,962 | 32,616
Investment securities: |  |
Available-for-sale | 24,084 | 25,952
Common equity securities | 283 | 291
Level 2 |  |
Investment securities: |  |
Available-for-sale | 237,581 | 244,090
Held-to-maturity | 8,151 | 8,380
Loans held for sale |  | 749
Accrued interest receivable | 7,303 | 7,115
Mortgage servicing rights | 1,712 | 1,710
Restricted equity securities | 7,833 | 7,462
Interest rate floor | 1,025 | 553
Interest rate swaps | 3,807 | 108
Financial liabilities: |  |
Deposits | 1,862,246 | 1,874,520
Short-term borrowings | 82,700 | 86,500
Long-term debt | 53,338 | 38,071
Accrued interest payable | 1,058 | 1,195
Interest rate swap | 4,182 | 138
Level 3 |  |
Investment securities: |  |
Net loans | $ 1,830,139 | $ 1,762,449

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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 Fair value portion of floor interest rate swaps. + 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 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454 Reference 2: 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=118954083&loc=d3e26610-111562 Reference 3: 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=118939692&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 Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + 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). + 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=99377092&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=118939692&loc=d3e27232-111563 + 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=117815213&loc=d3e19207-110258 + Details
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