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Investment Securities - Summary of Interest Income On Investment Securities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items] |  |  |
Total taxable interest income | $ 3,321 | $ 4,750 | $ 6,452
Total tax-exempt interest income | 18 | 82 | 120
Total | 3,339 | 4,832 | 6,572
U.S. Treasury and government sponsored entities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Total taxable interest income | 2,203 | 3,396 | 4,170
Other |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Total taxable interest income | 1,118 | 1,354 | 2,282
Municipal securities |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |
Total tax-exempt interest income | $ 18 | $ 82 | $ 120

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