REDEEMABLE PREFERRED STOCK (Details) - USD ($)								1 Months Ended		3 Months Ended				11 Months Ended	12 Months Ended
	Mar. 03, 2020	Mar. 02, 2020	Feb. 18, 2020	Jan. 28, 2020	Dec. 20, 2019	Oct. 22, 2019	Nov. 21, 2017	Feb. 29, 2020	Jan. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Nov. 20, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jul. 15, 2020	Jun. 15, 2020	May 15, 2020	Apr. 15, 2020	Mar. 16, 2020	Mar. 12, 2020	Feb. 28, 2020
Class of Stock [Line Items]
Deferred offering costs										$ 5,275,000					$ 5,275,000	$ 4,213,000
Offering costs allocated to temporary equity															$ 64,953,000
Outstanding common stock available for purchase (in shares)										1,164,432					1,164,432
Redeemable preferred stock redemptions										$ 5,874,000	$ 0	$ 4,000	$ 4,000		$ 5,882,000
Initial dividend on common stock					$ 4,380,644.70
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, par value (in usd per share)										$ 0.001					$ 0.001	$ 0.001
Preferred stock stated value (in usd per share)										$ 25.00					$ 25.00	$ 25.00
Preferred stock redemption, trading days prior to redemption															20 days
Proceeds from issuance of preferred stock															$ 111,377,000
Offering costs															8,697,000
Deferred offering costs										$ 5,980,000					5,980,000
Offering costs allocated to temporary equity															$ 701,000
Preferred stock, including temporary equity, shares outstanding (in shares)										4,468,315					4,468,315
Preferred stock, shares outstanding (in shares)										1,630,421					1,630,421	1,565,346
Preferred stock, shares redeemed (in shares)															16,061
Cumulative dividend rate															5.50%
Preferred stock, dividend rate (in usd per share)															$ 0.34375
Preferred dividends, per share amount (in usd per share)															$ 1.375	$ 1.375	$ 1.375
Preferred stock, shares issued (in shares)										1,630,821					1,630,821	1,566,386
Series A Preferred Stock | Scenario, Forecast
Class of Stock [Line Items]
Dividends to be paid per share (in usd per share)																		$ 0.114583	$ 0.114583	$ 0.114583	$ 0.114583	$ 0.114583
Series A Preferred Stock | Subsequent event
Class of Stock [Line Items]
Preferred stock, shares redeemed (in shares)									800
Preferred stock, dividends per share, declared (in usd per share)		$ 0.34375		$ 0.34375
Preferred dividends, per share amount (in usd per share)			$ 0.114583
Series A Preferred Unit
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)										4,484,376					4,484,376
Proceeds from issuance of preferred stock															$ 112,106,000
Offering costs															8,836,000
Warrant
Class of Stock [Line Items]
Proceeds from issuance of preferred stock															729,000
Offering costs															139,000
Offering costs allocated to temporary equity															$ 4,000
Preferred stock, shares outstanding (in shares)										4,484,376					4,484,376
Series D Preferred Stock | Scenario, Forecast
Class of Stock [Line Items]
Dividends to be paid per share (in usd per share)																		$ 0.117708	$ 0.117708	$ 0.117708	$ 0.117708	$ 0.117708
Series D Preferred Stock | Subsequent event
Class of Stock [Line Items]
Preferred stock, par value (in usd per share)																								$ 25
Preferred stock redemption, trading days prior to redemption								20 days
Preferred stock, shares outstanding (in shares)																							5,600
Cumulative dividend rate								5.65%
Preferred stock, dividend rate (in usd per share)	$ 0.35313
Series L Preferred Stock
Class of Stock [Line Items]
Preferred stock, par value (in usd per share)										$ 0.001					$ 0.001	$ 0.001
Preferred stock stated value (in usd per share)										$ 28.37					$ 28.37	$ 23.87
Proceeds from issuance of preferred stock							$ 229,251,000
Preferred stock, shares outstanding (in shares)										5,387,160					5,387,160	8,080,740
Cumulative dividend rate															5.50%
Preferred stock, dividend rate (in usd per share)															$ 1.56035
Preferred dividends, per share amount (in usd per share)															$ 1.560	$ 1.738
Preferred stock, shares issued (in shares)							8,080,740			8,080,740					8,080,740	8,080,740
Offering costs							$ 15,928,000
Discount on shares issued							2,946,000
Offering costs, non-issuance specific							$ 2,532,000
Dividend increase per year for failure to timely declare or pay dividends															1.00%
Dividend increase per year for failure to timely declare or pay dividends, maximum increase															8.50%
Minimum fixed charge coverage ratio															125.00%
Registration statement
Class of Stock [Line Items]
Warrant right to purchase a share of common stock (in shares)										0.25					0.25
Registration statement | Series L Preferred Stock
Class of Stock [Line Items]
Preferred stock stated value (in usd per share)							$ 28.37
Tender Offer | Series L Preferred Stock
Class of Stock [Line Items]
Preferred stock, dividends per share, declared (in usd per share)						$ 1.39
Authorized shares for repurchase (in shares)														2,693,580
Authorized shares for repurchase, percentage of share outstanding						33.00%
Purchase price (in usd per share)						$ 29.12
Dividends, preferred stock, aggregate value														$ 3,744,000
Professional fees						$ 462,000
Cost to repurchase tendered shares						$ 75,155,000
Redeemable preferred stock redemptions															$ 5,873,000
Dividends Declared, Tier One | Series D Preferred Stock | Subsequent event
Class of Stock [Line Items]
Preferred stock, dividends per share, declared, coverage period		2 months
Preferred stock, dividends per share, declared (in usd per share)		$ 0.23542
Dividends Declared, Tier Two | Series D Preferred Stock | Subsequent event
Class of Stock [Line Items]
Preferred stock, dividends per share, declared, coverage period		3 months
Preferred stock, dividends per share, declared (in usd per share)		$ 0.35313