Note 6 - Real Estate Held for Investment (Detail) - Impairment Losses on Real Estate Held For Investment (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Real estate held for investment	$ 614,786	$ 5,193,321	$ 1,033,266	$ 5,484,923
75 Improved, Residential Lots, Auburn, California, (Held Within Baldwin Ranch Subdivision, LLC) [Member]
Real estate held for investment	31,156		31,156
Undeveloped industrial land, San Jose, California [Member]
Real estate held for investment	86,400		86,400
Two Improved Residential Lots, West Sacramento, California [Member]
Real estate held for investment		352,865	51,840	352,865
Undeveloped, Residential Land, Coolidge, Arizona [Member]
Real estate held for investment		1,043,816	38,400	1,043,816
6 Improved Residential Lots, Coeur D’Alene, Idaho [Member]
Real estate held for investment	372,400	530,000	372,400	530,000
California, Arizona, Idaho [Member]
Real estate held for investment	$ 489,956	$ 5,174,094	$ 580,196	$ 5,465,696