LOANS HELD-FOR-INVESTMENT (Schedule Of Primary Credit Quality Indicator) (Details)	Jun. 30, 2020 USD ($) risk_rating	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held-for-investment and related receivables, net	$ 626,079,000		$ 301,630,000
Less: Allowance for credit losses	(27,684,000)	$ (19,779,000)	0
Total loans held-for-investment and related receivables, net	$ 598,395,000		301,630,000
Weighted Average Risk Rating | risk_rating	3.5
Mezzanine loans
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 0
2019	57,045,000
2018	83,041,000
Loans held-for-investment and related receivables, net	140,086,000		146,060,000
Less: Allowance for credit losses	(21,269,000)	(14,541,000)	0
Total loans held-for-investment and related receivables, net	118,800,000
Mezzanine loans | 1
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Mezzanine loans | 2
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Mezzanine loans | 3
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Mezzanine loans | 4
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Mezzanine loans | 5
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	57,045,000
2018	83,041,000
Loans held-for-investment and related receivables, net	140,086,000
Senior loans
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	113,682,000
2018	0
Loans held-for-investment and related receivables, net	113,682,000		152,820,000
Less: Allowance for credit losses	(492,000)	(809,000)	0
Senior loans | 1
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Senior loans | 2
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Senior loans | 3
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	113,682,000
2018	0
Loans held-for-investment and related receivables, net	113,682,000
Senior loans | 4
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Senior loans | 5
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Broadly syndicated loans
Financing Receivable, Credit Quality Indicator [Line Items]
2020	369,566,000
2019	2,745,000
2018	0
Loans held-for-investment and related receivables, net	372,311,000		2,750,000
Less: Allowance for credit losses	(5,923,000)	$ (4,429,000)	0
Total loans held-for-investment and related receivables, net	366,388,000		$ 2,750,000
Broadly syndicated loans | 1
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	0
Broadly syndicated loans | 2
Financing Receivable, Credit Quality Indicator [Line Items]
2020	5,972,000
2019	0
2018	0
Loans held-for-investment and related receivables, net	5,972,000
Broadly syndicated loans | 3
Financing Receivable, Credit Quality Indicator [Line Items]
2020	356,015,000
2019	2,745,000
2018	0
Loans held-for-investment and related receivables, net	358,760,000
Broadly syndicated loans | 4
Financing Receivable, Credit Quality Indicator [Line Items]
2020	7,579,000
2019	0
2018	0
Loans held-for-investment and related receivables, net	7,579,000
Broadly syndicated loans | 5
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
Loans held-for-investment and related receivables, net	$ 0