Loans Receivable - Allowance For Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for expected credit losses, beginning of period	$ 1,429	$ 4,198	$ 1,718	$ 5,437
Change in expected credit losses	746	(2,228)	457	(3,467)
Allowance for expected credit losses, end of period	2,175	1,970	2,175	1,970
Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for expected credit losses, beginning of period	1,295	1,608	1,362	1,683
Change in expected credit losses	(67)	(107)	(134)	(182)
Allowance for expected credit losses, end of period	1,228	1,501	1,228	1,501
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for expected credit losses, beginning of period	134	2,590	356	3,754
Change in expected credit losses	813	(2,121)	591	(3,285)
Allowance for expected credit losses, end of period	$ 947	$ 469	$ 947	$ 469