Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2022	Dec. 31, 2021
Common stock, par value	$ 0.10	$ 0.10
Common stock, shares authorized	154,048,469	144,164,000
Common stock, shares issued	57,595,000	51,651,000
Common stock, shares outstanding	57,595,000	51,651,000
Excess stock, par value	$ 0.10	$ 0.10
Excess stock, shares authorized	3,000,000	3,000,000
Excess stock, shares issued	0	0
Excess stock, shares outstanding	0	0
Series C Preferred Stock [Member]
Cumulative redeemable preferred stock, percentage	6.75%	6.75%
Cumulative redeemable preferred stock, par value	$ 0.10	$ 0.10
Cumulative redeemable preferred stock, shares authorized	3,866,000	13,750,000
Cumulative redeemable preferred stock, shares outstanding		9,884,000
Series D Preferred Stock [Member]
Cumulative redeemable preferred stock, percentage	6.375%	6.375%
Cumulative redeemable preferred stock, par value	$ 0.10	$ 0.10
Cumulative redeemable preferred stock, shares authorized	9,300,000	9,300,000
Cumulative redeemable preferred stock, shares outstanding	9,015,000	8,609,000
Cumulative redeemable preferred stock, shares issued	9,015,000	8,609,000