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Fair Value Measurements and Disclosures - Financial assets measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Securities available-for-sale | $ 146,149 | $ 123,562
Equity investments | 1,011 | 1,031
Mortgage loans held-for-investment | 17,142 | 12,182
U.S. asset backed securities |  |
Assets |  |
Securities available-for-sale | 21,293 | 25,592
U.S. government agency mortgage-backed securities |  |
Assets |  |
Securities available-for-sale | 5,459 | 4,046
U.S. government agency collateralized mortgage obligations |  |
Assets |  |
Securities available-for-sale | 24,053 | 23,909
State and municipal securities |  |
Assets |  |
Securities available-for-sale | 72,828 | 65,810
Non-U.S. government agencies collateralized mortgage obligations |  |
Assets |  |
Securities available-for-sale | 999 |
Corporate bonds |  |
Assets |  |
Securities available-for-sale | 6,507 | 4,205
Level 3 | Interest rate lock commitments |  |
Assets |  |
Derivative assets, Fair value | 1,712 | 6,932
Recurring |  |
Assets |  |
Equity investments | 1,011 | 1,031
Mortgage loans held-for-sale | 117,996 | 229,199
Mortgage loans held-for-investment | 17,142 | 12,182
Total | 285,509 | 374,024
Liabilities |  |
Total | 1,483 | 2,891
Recurring | U.S. asset backed securities |  |
Assets |  |
Securities available-for-sale | 21,293 | 25,592
Recurring | U.S. government agency mortgage-backed securities |  |
Assets |  |
Securities available-for-sale | 5,459 | 4,046
Recurring | U.S. government agency collateralized mortgage obligations |  |
Assets |  |
Securities available-for-sale | 24,053 | 23,909
Recurring | State and municipal securities |  |
Assets |  |
Securities available-for-sale | 72,828 | 65,810
Recurring | U.S. Treasuries |  |
Assets |  |
Securities available-for-sale | 15,010 |
Recurring | Non-U.S. government agencies collateralized mortgage obligations |  |
Assets |  |
Securities available-for-sale | 999 |
Recurring | Corporate bonds |  |
Assets |  |
Securities available-for-sale | 6,507 | 4,205
Recurring | Interest rate lock commitments |  |
Assets |  |
Derivative assets, Fair value | 1,712 | 6,932
Liabilities |  |
Derivative Liability | 360 | 100
Recurring | Forward Commitments |  |
Assets |  |
Derivative assets, Fair value | 447 |
Liabilities |  |
Derivative Liability | 22 | 1,572
Recurring | Customer derivatives - interest rate swaps |  |
Assets |  |
Derivative assets, Fair value | 1,052 | 1,118
Liabilities |  |
Derivative Liability | 1,101 | 1,219
Recurring | Level 2 |  |
Assets |  |
Equity investments | 1,011 | 1,031
Mortgage loans held-for-sale | 117,996 | 229,199
Mortgage loans held-for-investment | 17,142 | 12,182
Total | 283,797 | 367,092
Liabilities |  |
Total | 1,123 | 2,791
Recurring | Level 2 | U.S. asset backed securities |  |
Assets |  |
Securities available-for-sale | 21,293 | 25,592
Recurring | Level 2 | U.S. government agency mortgage-backed securities |  |
Assets |  |
Securities available-for-sale | 5,459 | 4,046
Recurring | Level 2 | U.S. government agency collateralized mortgage obligations |  |
Assets |  |
Securities available-for-sale | 24,053 | 23,909
Recurring | Level 2 | State and municipal securities |  |
Assets |  |
Securities available-for-sale | 72,828 | 65,810
Recurring | Level 2 | U.S. Treasuries |  |
Assets |  |
Securities available-for-sale | 15,010 |
Recurring | Level 2 | Non-U.S. government agencies collateralized mortgage obligations |  |
Assets |  |
Securities available-for-sale | 999 |
Recurring | Level 2 | Corporate bonds |  |
Assets |  |
Securities available-for-sale | 6,507 | 4,205
Recurring | Level 2 | Forward Commitments |  |
Assets |  |
Derivative assets, Fair value | 447 |
Liabilities |  |
Derivative Liability | 22 | 1,572
Recurring | Level 2 | Customer derivatives - interest rate swaps |  |
Assets |  |
Derivative assets, Fair value | 1,052 | 1,118
Liabilities |  |
Derivative Liability | 1,101 | 1,219
Recurring | Level 3 |  |
Assets |  |
Total | 1,712 | 6,932
Liabilities |  |
Total | 360 | 100
Recurring | Level 3 | Interest rate lock commitments |  |
Assets |  |
Derivative assets, Fair value | 1,712 | 6,932
Liabilities |  |
Derivative Liability | $ 360 | $ 100

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