Loans - Secured Loans Distributed Within California (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 64,293	$ 81,097
Loans - percent		100.00%	100.00%
San Francisco Bay Area [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)	[1]	$ 45,002	$ 60,273
Loans - percent	[1]	70.00%	74.30%
Santa Clara [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)	[1]	$ 15,034	$ 26,064
Loans - percent	[1]	23.40%	32.10%
San Francisco [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)	[1]	$ 20,362	$ 22,919
Loans - percent	[1]	31.70%	28.30%
San Mateo [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)	[1]	$ 3,858	$ 4,985
Loans - percent	[1]	6.00%	6.10%
Alameda [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)	[1]	$ 4,082	$ 5,637
Loans - percent	[1]	6.30%	7.00%
Contra Costa [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)	[1]	$ 1,666	$ 668
Loans - percent	[1]	2.60%	0.80%
Other Northern California [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 2,196	$ 2,197
Loans - percent		3.40%	2.70%
Placer [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 1,500	$ 1,500
Loans - percent		2.30%	1.80%
Tehama [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 405	$ 405
Loans - percent		0.60%	0.50%
Butte [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 291	$ 292
Loans - percent		0.50%	0.40%
Northern California [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 47,198	$ 62,470
Loans - percent		73.40%	77.00%
Los Angeles & Coastal [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 17,095	$ 18,108
Loans - percent		26.60%	22.40%
Los Angeles [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 3,618	$ 3,621
Loans - percent		5.60%	4.50%
San Diego [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 6,042	$ 6,043
Loans - percent		9.40%	7.50%
Orange [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 7,435	$ 8,444
Loans - percent		11.60%	10.40%
Other Southern California [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 0	$ 519
Loans - percent		0.00%	0.60%
San Bernardino [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 0	$ 519
Loans - percent		0.00%	0.60%
Southern California [Member]
Loans (Details) - Secured Loans Distributed Within California [Line Items]
Loans - principal (in Dollars)		$ 17,095	$ 18,627
Loans - percent		26.60%	23.00%

[1] Includes Silicon Valley