Note 4 - Loans (Detail) - Secured Loans Distributed within California (USD $)	Dec. 31, 2012	Dec. 31, 2011
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	$ 60,870,000	$ 73,386,000
Percent	100.00%	100.00%
San Francisco [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	28,115,000
Percent	46.18%
Contra Costa [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	17,927,000
Percent	29.44%
Santa Clara [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	3,182,000
Percent	5.23%
Alameda [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	1,682,000
Percent	2.76%
Solano [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	1,641,000
Percent	2.70%
San Mateo [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	665,000
Percent	1.09%
Napa [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	411,000
Percent	0.68%
Marin [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	180,000
Percent	0.30%
San Francisco Bay Area [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	53,803,000
Percent	88.38%
Sacramento [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	2,518,000
Percent	4.14%
Calaveras [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	196,000
Percent	0.32%
Monterey [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	183,000
Percent	0.30%
Butte [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	115,000
Percent	0.19%
San Benito [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	98,000
Percent	0.16%
Northern California [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	3,110,000
Percent	5.11%
Riverside [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	2,140,000
Percent	3.52%
Los Angeles [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	817,000
Percent	1.34%
Orange [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	588,000
Percent	0.97%
San Bernardino [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	196,000
Percent	0.32%
Kern [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	121,000
Percent	0.20%
San Diego [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	95,000
Percent	0.16%
Southern California [Member]
San Francisco Bay Area Counties
Secured loans – principal (in Dollars)	$ 3,957,000
Percent	6.51%