Consolidated Statements Of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Restricted cash	$ 50,266	$ 54,792
Notes receivable, net	449,162	439,167
Real estate held-for-sale	$ 11,297	$ 20,202
Redeemable Cumulative Preferred Stock, dividend rate	5.00%	5.00%
Redeemable Cumulative Preferred Stock, par value	$ 0.01	$ 0.01
Redeemable Cumulative Preferred Stock, authorized amount	15,000	15,000
Redeemable Cumulative Preferred Stock, shares issued	0	10,000
Redeemable Cumulative Preferred Stock, shares outstanding	0	10,000
Redeemable Cumulative Preferred Stock, stated value per share	$ 1,000	$ 1,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Variable Interest Entity, Primary Beneficiary [Member]
Restricted cash	$ 22,534	$ 28,400
Notes receivable, net	$ 292,590	$ 341,975
Class A Common Stock [Member]
Common Stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	75,530,331	78,379,530
Common stock, shares outstanding	75,530,331	78,379,530
Class B Common Stock [Member]
Common Stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	15,957,853	14,840,634
Common stock, shares outstanding	15,957,853	14,840,634