Fair Value Measurements (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020 |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | $ 2,478 | $ 2,389 |
Debt securities, available-for-sale, at fair value | 313,214 | 209,471 |
Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 315,692 | 211,860 |
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 66,842 | 4,777 |
Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 248,850 | 207,083 |
Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
Nonrecurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Fair Value | 1,046 | 3,439 |
Nonrecurring fair value measurements: [Abstract] | | |
Impaired loans | 1,046 | 3,439 |
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Fair Value | 0 | 0 |
Nonrecurring fair value measurements: [Abstract] | | |
Impaired loans | 0 | 0 |
Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Fair Value | 0 | 0 |
Nonrecurring fair value measurements: [Abstract] | | |
Impaired loans | 0 | 0 |
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Fair Value | 1,046 | 3,439 |
Nonrecurring fair value measurements: [Abstract] | | |
Impaired loans | 1,046 | 3,439 |
U.S. Treasury notes [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 64,364 | 2,388 |
U.S. Treasury notes [Member] | Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 64,364 | 2,388 |
U.S. Treasury notes [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 64,364 | 2,388 |
U.S. Treasury notes [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
U.S. Treasury notes [Member] | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
U.S. Agency notes [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 100,229 | 67,900 |
U.S. Agency notes [Member] | Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 100,229 | 67,900 |
U.S. Agency notes [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
U.S. Agency notes [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 100,229 | 67,900 |
U.S. Agency notes [Member] | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
U.S. Agency mortgage-backed securities [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 98,114 | 91,634 |
U.S. Agency mortgage-backed securities [Member] | Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 98,114 | 91,634 |
U.S. Agency mortgage-backed securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
U.S. Agency mortgage-backed securities [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 98,114 | 91,634 |
U.S. Agency mortgage-backed securities [Member] | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
Non-taxable Municipal securities [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 11,498 | 12,933 |
Non-taxable Municipal securities [Member] | Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 11,498 | 12,933 |
Non-taxable Municipal securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
Non-taxable Municipal securities [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 11,498 | 12,933 |
Non-taxable Municipal securities [Member] | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
Taxable Municipal securities [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 36,405 | 33,437 |
Taxable Municipal securities [Member] | Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 36,405 | 33,437 |
Taxable Municipal securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
Taxable Municipal securities [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 36,405 | 33,437 |
Taxable Municipal securities [Member] | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
Mutual funds [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 1,389 | 1,402 |
Mutual funds [Member] | Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 52 | 50 |
Mutual funds [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 52 | 50 |
Mutual funds [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 0 | 0 |
Mutual funds [Member] | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 0 | 0 |
Mutual Funds Measured At Net Asset Value [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 1,337 | 1,352 |
Mutual Funds Measured At Net Asset Value [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 0 | 0 |
Mutual Funds Measured At Net Asset Value [Member] | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 0 | 0 |
Equity securities [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 1,089 | 987 |
Equity securities [Member] | Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 1,089 | 987 |
Equity securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 1,089 | 987 |
Equity securities [Member] | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 0 | 0 |
Equity securities [Member] | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Equity securities with a readily determinable fair value, at fair value | 0 | 0 |
Corporate Debt Securities | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 2,604 | 1,179 |
Corporate Debt Securities | Recurring [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 2,604 | 1,179 |
Corporate Debt Securities | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 0 | 0 |
Corporate Debt Securities | Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | 2,604 | 1,179 |
Corporate Debt Securities | Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | | |
Recurring fair value measurement [Abstract] | | |
Debt securities, available-for-sale, at fair value | $ 0 | $ 0 |