Note 4 - Loans (Details) - Secured Loans Distributed within California (USD $)	Mar. 31, 2015		Dec. 31, 2014
San Francisco Bay Area(1)
Loans - principal (in Dollars)	$ 76,742,000		$ 71,017,000
Loans - percent	100.00%		100.00%
San Francisco [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	20,017,000	[1]	19,969,000	[1]
Loans - percent	26.08%	[1]	28.12%	[1]
Contra Costa [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	16,642,000	[1]	18,090,000	[1]
Loans - percent	21.70%	[1]	25.47%	[1]
San Mateo [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	14,176,000	[1]	11,525,000	[1]
Loans - percent	18.47%	[1]	16.23%	[1]
Marin [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	855,000	[1]	855,000	[1]
Loans - percent	1.11%	[1]	1.20%	[1]
Santa Clara [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	2,415,000	[1]	2,917,000	[1]
Loans - percent	3.15%	[1]	4.11%	[1]
Alameda [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	3,372,000	[1]	2,758,000	[1]
Loans - percent	4.39%	[1]	3.88%	[1]
Solano [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	2,575,000	[1]	2,575,000	[1]
Loans - percent	3.36%	[1]	3.63%	[1]
Napa [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	988,000	[1]	990,000	[1]
Loans - percent	1.29%	[1]	1.39%	[1]
San Francisco Bay Area [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	61,040,000	[1]	59,679,000	[1]
Loans - percent	79.55%	[1]	84.03%	[1]
Yolo [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	2,800,000		2,800,000
Loans - percent	3.65%		3.94%
Santa Cruz [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	983,000		1,000,000
Loans - percent	1.28%		1.41%
Sacramento [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	224,000		224,000
Loans - percent	0.29%		0.32%
Monterey [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	173,000		173,000
Loans - percent	0.22%		0.24%
El Dorado [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	2,045,000
Loans - percent	2.66%
Calaveras [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	163,000		167,000
Loans - percent	0.21%		0.23%
San Benito [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	96,000		96,000
Loans - percent	0.13%		0.14%
Other Northern California [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	6,484,000		4,460,000
Loans - percent	8.44%		6.28%
Northern California [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	67,524,000		64,139,000
Loans - percent	87.99%		90.31%
Los Angeles [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	5,274,000		2,930,000
Loans - percent	6.87%		4.13%
Orange [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	1,436,000		1,438,000
Loans - percent	1.87%		2.02%
Ventura [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	347,000		347,000
Loans - percent	0.45%		0.49%
San Diego [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	750,000		750,000
Loans - percent	0.98%		1.06%
Los Angeles and Coastal [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	7,807,000		5,465,000
Loans - percent	10.17%		7.70%
San Bernardino [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	1,300,000		1,300,000
Loans - percent	1.69%		1.83%
Kern [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	111,000		113,000
Loans - percent	0.15%		0.16%
Other Southern California [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	1,411,000		1,413,000
Loans - percent	1.84%		1.99%
Southern California [Member]
San Francisco Bay Area(1)
Loans - principal (in Dollars)	$ 9,218,000		$ 6,878,000
Loans - percent	12.01%		11.59%

[1] Includes Silicon Valley