Common Stock	12 Months Ended
	Dec. 31, 2022
Equity [Abstract]
Common Stock	Common Stock    Quarterly cash dividends were paid aggregating to $10.6 million, $9.4 million, and $8.8 million, or $1.82 per share, $1.50 per share, and $1.38 per share, in 2022, 2021, and 2020, respectively.  On February 24, 2023, the Company announced that its Board of Directors declared a $0.60 per share cash dividend payable on March 17, 2023, to shareholders of record on March 9, 2023.  Federal and State regulations place certain limitations on the payment of dividends by the Company.At December, 31, 2022, there were no shares available under the stock repurchase program. However, on January 27, 2023 the Company announced that its Board of Directors authorized the repurchase of up to an additional 285,000 shares of common stock. The Company intends to continue to repurchase its stock from time to time depending upon market conditions. The Company can make no assurances that it will continue this program or that it will authorize additional shares for repurchase.  During 2022, 2021 and 2020, 333,724, 279,276 and 327,000 shares of common stock were repurchased, respectively.