SHAREHOLDERS’ EQUITY (Details Narrative) - USD ($)							1 Months Ended	3 Months Ended
	Apr. 01, 2022	Mar. 15, 2022	Mar. 07, 2022	Feb. 15, 2022	Jan. 12, 2022	Aug. 16, 2021	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2021	May 04, 2022	Feb. 15, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends paid		$ 10,400,000
Dividend paid price per share		$ 0.20
Proceed from dividend reinvestment and stock purchase plan (DRIP)								$ 911,000	$ 920,000
Common Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Proceed from dividend reinvestment and stock purchase plan (DRIP)								$ 1,700,000
Common Stock [Member] | ATM Program [Member] | B. Riley FBR, Inc [Member] | Maximum [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Proceeds from sale of equity, maximum			$ 150,000,000			$ 100,000,000
Common Stock [Member] | Subsequent Event [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend paid price per share	$ 0.20
Dividend payable date of record	Jun. 15, 2022
Divided date of record	May 16, 2022
6.75% Series C Cumulative Redeemable Preferred Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends paid		$ 4,200,000
Dividend paid price per share		$ 0.421875
Dividend rate declared				6.75%
Liquidation preference, per share											$ 25.00
Annual rate of dividend								$ 1.6875
6.75% Series C Cumulative Redeemable Preferred Stock [Member] | Subsequent Event [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Divided date of record	May 16, 2022
Dividend paid price per share	$ 0.421875
Dividend payable date	Jun. 15, 2022
6.375% Series D Cumulative Redeemable Preferred Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends paid		$ 3,400,000
Dividend paid price per share		$ 0.3984375
Dividend rate declared				6.375%
Liquidation preference, per share											$ 25.00
Annual rate of dividend								$ 1.59375
6.375% Series D Cumulative Redeemable Preferred Stock [Member] | Subsequent Event [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Divided date of record	May 16, 2022
Dividend paid price per share	$ 0.3984375
Dividend payable date	Jun. 15, 2022
Stock Purchase Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reinvestment of dividend		$ 911,000						$ 911,000
DRIP [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Shares issued during the period								72,000
Common Stock Repurchase Program [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Stock repurchased, value					$ 25,000,000
New Common ATM Program [Member] | 2020 Registration Statement [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Proceeds from sale of equity, maximum								$ 7,900,000
Sale of Stock, Number of Shares Issued in Transaction								300,000
Sale of Stock, Price Per Share							$ 26.82	$ 26.82
Gross proceeds from sale of equity after offering expenses								$ 8,000,000.0
2022 Common ATM Program [Member] | 2022 Distribution Agents [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Proceeds from sale of equity, maximum							$ 30,500,000
Sale of Stock, Number of Shares Issued in Transaction							1,300,000
Sale of Stock, Price Per Share							$ 24.07	$ 24.07
Gross proceeds from sale of equity after offering expenses							$ 30,900,000
[custom:CommonStockAvailableForSaleValue-0]							$ 119,100,000	$ 119,100,000
2022 Common ATM Program [Member] | Subsequent Event [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Sale of Stock, Number of Shares Issued in Transaction	739,000
Sale of Stock, Price Per Share	$ 24.32
[custom:CommonStockAvailableForSaleValue-0]										$ 101,100,000