REDEEMABLE PREFERRED STOCK - Cash Dividends (Details) - USD ($) $ in Thousands							3 Months Ended
	Jun. 03, 2020	Mar. 02, 2020	Jan. 28, 2020	Aug. 08, 2019	Jun. 04, 2019	Feb. 20, 2019	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares				4,091,980	3,601,721	3,149,924
Cash Dividends				$ 1,318	$ 1,150	$ 1,010	$ 2,162	$ 1,886	$ 3,252	$ 1,318	$ 1,150	$ 1,010
Series D Preferred Stock
Class of Stock [Line Items]
Cash Dividends							$ 10	$ 3	$ 3
Dividend Paid, October 15, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares	5,809,298
Cash Dividends	$ 673
Dividend Paid, October 15, 2020 | Series D Preferred Stock
Class of Stock [Line Items]
Number of Shares	18,737
Cash Dividends	$ 2
Dividend Paid, September 15, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares	5,696,822
Cash Dividends	$ 652
Dividend Paid, September 15, 2020 | Series D Preferred Stock
Class of Stock [Line Items]
Number of Shares	18,737
Cash Dividends	$ 2
Dividend Paid, August 17, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares	5,466,743
Cash Dividends	$ 629
Dividend Paid, August 17, 2020 | Series D Preferred Stock
Class of Stock [Line Items]
Number of Shares	6,900
Cash Dividends	$ 1
Dividend Paid, July 15, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares		5,324,109
Cash Dividends		$ 594
Dividend Paid, July 15, 2020 | Series D Preferred Stock
Class of Stock [Line Items]
Number of Shares		6,900
Cash Dividends		$ 1
Dividend Paid, June 15, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares		5,033,203
Cash Dividends		$ 563
Dividend Paid, June 15, 2020 | Series D Preferred Stock
Class of Stock [Line Items]
Number of Shares		6,900
Cash Dividends		$ 1
Dividend Paid, May 15, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares		4,853,969
Cash Dividends		$ 554
Dividend Paid, May 15, 2020 | Series D Preferred Stock
Class of Stock [Line Items]
Number of Shares		6,580
Cash Dividends		$ 1
Dividend Paid, April 15, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares			4,827,633
Cash Dividends			$ 547
Dividend Paid, April 15, 2020 | Series D Preferred Stock
Class of Stock [Line Items]
Number of Shares		5,980
Cash Dividends		$ 1
Dividend Paid, March 16, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares			4,684,453
Cash Dividends			$ 530
Dividend Paid, March 16, 2020 | Series D Preferred Stock
Class of Stock [Line Items]
Number of Shares		5,600
Cash Dividends		$ 0
Dividend Paid, February 18, 2020 | Series A Preferred Stock
Class of Stock [Line Items]
Number of Shares			4,581,353
Cash Dividends			$ 516