Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Retained earnings which is available to distribute in the form of cash dividends to the Holding Company	$ 81.9
Purchase of treasury shares (in shares)	1,253,725	436,619
Treasury Stock Acquired, Average Cost Per Share	$ 21.73	$ 22.88
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	594,462
Savings Bank [Member]
Liquidation Account, Conversion From Mutual to Stock Form	$ 0.3	$ 0.4