EARNINGS PER SHARE (Details) $ / shares in Units, $ in Thousands	2 Months Ended	3 Months Ended										8 Months Ended	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2019 USD ($) $ / shares	Sep. 30, 2019 USD ($) $ / shares	Jun. 30, 2019 USD ($) $ / shares	Mar. 31, 2019 USD ($) $ / shares	Oct. 31, 2018 USD ($)	Jul. 31, 2018 USD ($)	Apr. 30, 2018 USD ($)	Jan. 31, 2018 USD ($)	Oct. 31, 2017 USD ($)	Jul. 31, 2017 USD ($)	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Apr. 30, 2018 USD ($) $ / shares shares	Apr. 30, 2017 USD ($) $ / shares shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Ratio of units exchanged for shares													1
Net Income (Loss) Attributable to Parent [Abstract]
Income (loss) from continuing operations – controlling interests												$ (4,908)	$ 78,669	$ (30,266)	$ (24,473)
Income (loss) from discontinued operations – controlling interests												510	0	147,054	67,820
Net income (loss) attributable to controlling interests	$ (2,756)	$ 48,658	$ 31,596	$ 3,113	$ (4,698)	$ (4,558)	$ 2,916	$ (20,874)	$ 136,105	$ 12,821	$ (11,264)	(4,398)	78,669	116,788	43,347
Dividends to preferred shareholders												(4,547)	(6,821)	(8,569)	(10,546)
Redemption of preferred shares												0	0	(3,657)	(1,435)
NET INCOME (LOSS) AVAILABLE TO COMMON SHAREHOLDERS	$ (3,892)	$ 46,953	$ 29,891	$ 1,407	$ (6,403)	$ (6,264)	$ 1,211	$ (22,579)	$ 134,331	$ 6,360	$ (13,550)	(8,945)	71,848	104,562	31,366
Noncontrolling interests – Operating Partnership												(1,032)	6,752	12,702	4,059
Dividends to preferred unitholders												0	537	0	0
Numerator for diluted earnings (loss) per share												$ (9,977)	$ 79,137	$ 117,264	$ 35,425
DENOMINATOR
Denominator for basic earnings per share weighted average shares (in shares) | shares												11,937,000	11,744,000	11,998,000	12,117,000
Effect of redeemable operating partnership units (in shares) | shares												1,387,000	1,237,000	1,462,000	1,613,000
Effect of Series D preferred units (in shares) | shares												0	193,000	0	0
Effect of diluted restricted stock awards and restricted stock units (in shares) | shares												0	8,000	0	0
Denominator for diluted earnings per share (in shares) | shares												13,324,000	13,182,000	13,460,000	13,730,000
Earnings (loss) per common share from continuing operations – basic (in dollars per share) | $ / shares												$ (0.79)	$ 6.06	$ (3.54)	$ (3.01)
Earnings (loss) per common share from discontinued operations – basic (in dollars per share) | $ / shares												0.04	0	12.25	5.59
NET EARNINGS (LOSS) PER COMMON SHARE – BASIC (in dollars per share) | $ / shares		$ 3.95	$ 2.57	$ 0.11	$ (0.54)							(0.75)	6.06	8.71	2.58
Earnings (loss) per common share from continuing operations - diluted (in dollars per share) | $ / shares												(0.79)	6.00	(3.54)	(3.01)
Earnings (loss) per commong shares from discontinued operations - diluted (in dollars per share) | $ / shares												0.04	0	12.25	5.59
NET EARNINGS (LOSS) PER COMMON SHARE - DILUTED (in dollars per share) | $ / shares		$ 3.89	$ 2.54	$ 0.11	$ (0.54)							$ (0.75)	$ 6.00	$ 8.71	$ 2.58
Performance Shares And Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive excluded from computation of earnings per share (in shares) | shares													37,822