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Fair Value Measurements and Disclosures - Estimated fair values of financial instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financial assets: |  |
Securities available-for-sale | $ 146,149 | $ 123,562
Securities held-to-maturity | 6,660 | 6,857
Equity investments | 1,011 | 1,031
Mortgage loans held-for-investment | 17,142 | 12,182
Carrying amount |  |
Financial assets: |  |
Restricted investment in bank stock | 4,162 | 7,861
Level 1 | Carrying amount |  |
Financial assets: |  |
Cash and cash equivalents | 63,121 | 36,744
Level 1 | Fair value |  |
Financial assets: |  |
Cash and cash equivalents | 63,121 | 36,744
Level 2 | Carrying amount |  |
Financial assets: |  |
Securities available-for-sale | 146,149 | 123,562
Securities held-to-maturity | 6,406 | 6,510
Equity investments | 1,011 | 1,031
Mortgage loans held-for-sale | 117,996 | 229,199
Mortgage loans held-for-investment | 17,142 | 12,182
Financial liabilities: |  |
Deposits | 1,439,047 | 1,241,335
Short-term borrowings | 22,278 | 106,862
Long-term debt | 78,405 | 165,546
Subordinated debentures | 40,760 | 40,671
Accrued interest payable | 663 | 1,154
Level 2 | Carrying amount | Forward Commitments |  |
Financial assets: |  |
Derivative asset | 447 |
Financial liabilities: |  |
Derivatives | 22 | 1,572
Level 2 | Carrying amount | Customer derivatives - interest rate swaps |  |
Financial assets: |  |
Derivative asset | 1,052 | 1,118
Financial liabilities: |  |
Derivatives | 1,101 | 1,219
Level 2 | Fair value |  |
Financial assets: |  |
Securities available-for-sale | 146,149 | 123,562
Securities held-to-maturity | 6,660 | 6,857
Equity investments | 1,011 | 1,031
Mortgage loans held-for-sale | 117,996 | 229,199
Mortgage loans held-for-investment | 17,142 | 12,182
Financial liabilities: |  |
Deposits | 1,552,500 | 1,392,500
Short-term borrowings | 22,278 | 106,862
Long-term debt | 79,373 | 168,000
Subordinated debentures | 41,859 | 38,375
Accrued interest payable | 663 | 1,154
Level 2 | Fair value | Forward Commitments |  |
Financial assets: |  |
Derivative asset | 447 |
Financial liabilities: |  |
Derivatives | 22 | 1,572
Level 2 | Fair value | Customer derivatives - interest rate swaps |  |
Financial assets: |  |
Derivative asset | 1,052 | 1,118
Financial liabilities: |  |
Derivatives | 1,101 | 1,219
Level 3 | Interest rate lock commitments |  |
Financial assets: |  |
Derivative asset | 1,712 | 6,932
Level 3 | Carrying amount |  |
Financial assets: |  |
Loans receivable, net of the allowance and lease losses | 1,361,528 | 1,272,582
Accrued interest receivable | 5,080 | 5,482
Level 3 | Carrying amount | Interest rate lock commitments |  |
Financial assets: |  |
Derivative asset | 1,712 | 6,932
Financial liabilities: |  |
Derivatives | 360 | 100
Level 3 | Fair value |  |
Financial assets: |  |
Loans receivable, net of the allowance and lease losses | 1,391,260 | 1,289,776
Accrued interest receivable | 5,080 | 5,482
Level 3 | Fair value | Interest rate lock commitments |  |
Financial assets: |  |
Derivative asset | 1,712 | 6,932
Financial liabilities: |  |
Derivatives | $ 360 | $ 100

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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=121558606&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=121553693&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=121645371&loc=d3e27161-111563 + Details
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