Investment in Unconsolidated Entities (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) Item entity Investment	Dec. 31, 2020 USD ($)
Equity method investments:
Equity method, Carrying value	$ 64,316,000	$ 62,718,000
Other equity investments:
Other equity investments, carrying value	25,781,000	45,336,000
Investment in unconsolidated entities	$ 90,097,000	108,054,000
Number of publicly traded investments | Item	0
Number of investments impacted | Investment	3
Carrying value over (under) equity in net assets	$ 0
Equity interest in a natural gas power plant
Equity method investments:
Equity method, Participation / Ownership %	10.00%
Equity method, Carrying value	$ 26,255,000	25,095,000
Investor entity which owns equity in an online real estate company
Equity method investments:
Equity method, Participation / Ownership %	50.00%
Equity method, Carrying value	$ 5,206,000	9,397,000
Other equity investments:
Proceeds from capital distributions	12,200,000
Equity interest in a residential mortgage originator
Equity method investments:
Equity method, Carrying value	20,327,000	17,852,000
Other equity investments:
Carrying value over (under) equity in net assets	1,600,000
Various
Equity method investments:
Equity method, Carrying value	12,528,000	10,374,000
Other equity investments:
Investment in unconsolidated entities	$ 7,300,000
Number of investor entities | entity	2
Number of shopping malls | Item	2
Equity interest in a servicing and advisory business
Other equity investments:
Cost method, Participation / Ownership %	2.00%
Other equity investments, carrying value	$ 12,955,000	17,584,000
Investment funds which own equity in a loan servicer and other real estate assets
Other equity investments:
Other equity investments, carrying value	$ 4,194,000	7,267,000
Investor entities which own equity interests in two entertainment and retail centers
Other equity investments:
Cost method, Participation / Ownership %	15.00%
Other equity investments, carrying value	$ 7,320,000	0
Various, including FHLB stock at December 31, 2020
Other equity investments:
Other equity investments, carrying value	$ 1,312,000	20,485,000
Minimum
Other equity investments:
Cost method, Participation / Ownership %	4.00%
Minimum | Various
Equity method investments:
Equity method, Participation / Ownership %	25.00%
Maximum
Other equity investments:
Cost method, Participation / Ownership %	6.00%
Maximum | Various
Equity method investments:
Equity method, Participation / Ownership %	50.00%
Subordinated Loans | Equity interest in a residential mortgage originator
Equity method investments:
Equity method, Carrying value	$ 4,500,000	$ 4,500,000