CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Retained Earnings	Total
Balance at beginning (in Shares) at Dec. 31, 2019	17,434
Balance at beginning at Dec. 31, 2019	$ 215,125	$ 108,667	$ 323,792
Net Income		38,425	38,425
Dividend Reinvestment & Common Stock Purchase Plan (in Shares)	19
Dividend Reinvestment & Common Stock Purchase Plan	$ 1,230		1,230
Restricted Stock Award - Net - Employees (in Shares)	16
Restricted Stock Award - Net - Employees	$ 851		851
Stock Award - Board Of Directors (in Shares)	4
Stock Award - Board Of Directors	$ 245		245
Cash Dividends on Common Stock		(18,178)	(18,178)
Cash Dividends on Preferred Stock		(120)	(120)
Common Stock Expenses		(37)	(37)
Balance at ending (in Shares) at Dec. 31, 2020	17,473
Balance at ending at Dec. 31, 2020	$ 217,451	128,757	346,208
Net Income		36,543	36,543
Dividend Reinvestment & Common Stock Purchase Plan (in Shares)	40
Dividend Reinvestment & Common Stock Purchase Plan	$ 3,837		3,837
Restricted Stock Award - Net - Employees (in Shares)	6
Restricted Stock Award - Net - Employees	$ 350		350
Stock Award - Board Of Directors (in Shares)	3
Stock Award - Board Of Directors	$ 281		281
Cash Dividends on Common Stock		(19,373)	(19,373)
Cash Dividends on Preferred Stock		(120)	(120)
Balance at ending (in Shares) at Dec. 31, 2021	17,522
Balance at ending at Dec. 31, 2021	$ 221,919	145,807	367,726
Net Income	$ 0	42,429	42,429
Dividend Reinvestment & Common Stock Purchase Plan (in Shares)	114
Dividend Reinvestment & Common Stock Purchase Plan	$ 10,335		10,335
Restricted Stock Award - Net - Employees (in Shares)	3
Restricted Stock Award - Net - Employees	$ 520		520
Stock Award - Board Of Directors (in Shares)	3
Stock Award - Board Of Directors	$ 280		280
Cash Dividends on Common Stock		(20,810)	(20,810)
Cash Dividends on Preferred Stock		(120)	(120)
Common Stock Expenses		(32)	(32)
Balance at ending (in Shares) at Dec. 31, 2022	17,642
Balance at ending at Dec. 31, 2022	$ 233,054	$ 167,274	$ 400,328