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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Retained earnings which is available to distribute in the form of cash dividends to the Holding Company | $ 10.7 |
Purchase of treasury shares (in shares) | 142,405 | 40,000
Treasury Stock Acquired, Average Cost Per Share | $ 16.45 | $ 19.28
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased | 284,806 |
Savings Bank [Member] |  |
Liquidation Account, Conversion From Mutual to Stock Form | $ 0.4 | $ 0.5

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