CONDENSED CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2020	$ 217,451	$ 128,757	$ 346,208
Balance, shares at Dec. 31, 2020	17,473
Net Income		6,907	6,907
Dividend Reinvestment & Common Stock Purchase Plan	$ 322		322
Dividend Reinvestment & Common Stock Purchase Plan, shares	5
Restricted Stock Award - Net - Employees	$ 203		203
Restricted Stock Award - Net - Employees, shares
Cash Dividends on Common Stock		(4,762)	(4,762)
Cash Dividends on Preferred Stock		(30)	(30)
Balance at Mar. 31, 2021	$ 217,976	130,872	348,848
Balance, shares at Mar. 31, 2021	17,478
Balance at Dec. 31, 2021	$ 221,919	145,807	367,726
Balance, shares at Dec. 31, 2021	17,522
Net Income		12,100	12,100
Dividend Reinvestment & Common Stock Purchase Plan	$ 2,906		2,906
Dividend Reinvestment & Common Stock Purchase Plan, shares	29
Restricted Stock Award - Net - Employees	$ 267		267
Restricted Stock Award - Net - Employees, shares
Cash Dividends on Common Stock		(5,087)	(5,087)
Cash Dividends on Preferred Stock		(30)	(30)
Balance at Mar. 31, 2022	$ 225,092	$ 152,790	$ 377,882
Balance, shares at Mar. 31, 2022	17,551