Loans Portfolio - Loan Modifications (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020
Financing Receivable Allowance For Credit Losses [Line Items]
Outstanding principal balance			$ 500,000,000
Carrying value	$ 167,744,000	[1]	$ 516,484,000	[2]
Newport Beach
Financing Receivable Allowance For Credit Losses [Line Items]
Unpaid interest in cash	1,500,000
Outstanding principal balance	81,400,000
Carrying value	77,500,000
Decrease in contractual exit fees	3,400,000
San Diego
Financing Receivable Allowance For Credit Losses [Line Items]
Outstanding principal balance	97,500,000
Carrying value	97,300,000
Decrease in contractual exit fees	800,000
Washington [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Carrying value	11,500,000
Decrease in contractual exit fees	$ 11,200,000

[1] This financing has a LIBOR floor of 1.85%.

[2] Weighted average interest rate as of December 31, 2020 was 5.09%. Weighted average is based on outstanding principal as of December 31, 2020.