Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income (loss)	$ 5,139	$ (1,747)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Provision for loan losses		1,465
Loss on sale and payoff of loans and mark-to-market of loans		182
Loss on repurchase, reissuance or early retirement of debt		2,626
Change in other investments:
Income from investments in equity method investees	46	2,021
Unrealized loss (gain) on other equity investments		318
Unrealized (gain) loss on other investments	(1,192)	278
Depreciation and amortization	1,827	251
Share-based compensation expense	462	448
Gain on deconsolidation	(3,520)
Other, net	76	(79)
Net change in operating assets and liabilities:
Increase in interest receivable	(4,838)	(180)
Decrease in receivables	1,039	1,413
Decrease in marketable securities	3,563	1,185
Decrease (increase) in deposits and other assets	(7,978)	1,077
Decrease in marketable securities sold, but not yet purchased	(1,930)	(1,639)
Decrease in interest payable	(3,548)	(469)
Decrease in accrued compensation	(35,695)	(33,067)
Increase in other liabilities	3,171	3,535
Net cash used in operating activities	(43,378)	(22,382)
Cash flows from investing activities:
Purchases of fixed assets	(637)	(111)
Purchases of other investments	(844)	(994)
Sales or distributions from other investments	8,312	768
Funding of loans collateralizing asset-backed securities issued	(35,153)	(72,642)
Funding of loans held for investment	(25,102)	(63,245)
Sale, payoff and principal receipts of loans collateralizing asset-backed securities issued	23,806	82,909
Sale, payoff and principal receipts of loans held for investment	6,876	1,431
Net decrease in cash and restricted cash due to deconsolidation of subsidiaries	(27,771)
Net cash used in investing activities	(50,513)	(51,884)
Cash flows from financing activities:
Proceeds from issuance of repurchase agreement		3,878
Proceeds from sale of note payable to affiliate		829
Payment of debt issuance costs		(1,837)
Repayment of asset-backed securities issued	(801)	(332,100)
Proceeds of issuance from asset-backed securities issued		327,646
Distributions and distribution equivalents paid on common shares and RSUs	(1,070)	(2,038)
Capital contributions of nonredeemable non-controlling interest holders		445
Purchase of common shares for treasury	(669)	(1,044)
Distributions to non-controlling interest shareholders	(913)	(108)
Employee taxes paid on shares withheld for tax-withholding purposes	(84)
Net cash provided by financing activities	4,213	55,222
Net decrease in cash, cash equivalents, and restricted cash	(89,678)	(19,044)
Cash, cash equivalents and restricted cash, beginning of period	132,808	137,321
Cash, cash equivalents and restricted cash, end of period	43,130	118,277
Supplemental disclosures of cash flow information:
Cash paid during the period for interest	14,321	10,171
Cash paid during the period for taxes	89
Non-cash investing and financing activities:
Reissuance of shares of common share from treasury related to vesting of restricted share units	357	83
Distributions declared but not yet paid	640	646
Acquisition of equity securities in restructuring of loans	259
Initial recognition of operating lease right-of-use assets	23,604
Initial recognition of operating lease liabilities	29,278
Carrying value of noncash assets derecognized on deconsolidation of subsidiaries	1,226,848
Carrying value of noncash liabilities derecognized on deconsolidation of subsidiaries	1,161,933
Carrying value of non-controlling interest derecognized on deconsolidation of subsidiaries	12,842
Fair value of marketable securities recognized on deconsolidation of subsidiaries	76,879
Fair value of other investments recognized on deconsolidation of subsidiaries	7,516
CNB [Member]
Cash flows from financing activities:
Proceeds from drawdowns on line of credit		8,000
BNP Paribas [Member]
Cash flows from financing activities:
Proceeds from drawdowns on line of credit	$ 7,750	$ 51,550