Note C - Financial Instruments and Concentrations of Credit Risk (Detail) (USD $)										6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Real Estate Loans [Member] Minimum [Member]	Jun. 30, 2012 Real Estate Loans [Member] Maximum [Member]	Jun. 30, 2012 Real Estate Loans [Member]	Jun. 30, 2012 Six Real Estate Loans [Member] Common Guarantors [Member]	Dec. 31, 2011 Seven Real Estate Loans [Member] Common Guarantors [Member]	Jun. 30, 2011 Seven Real Estate Loans [Member] Common Guarantors [Member]	Jun. 30, 2012 Four Real Estate Loans [Member] Common Guarantors [Member]	Jun. 30, 2012 Nevada [Member]	Dec. 31, 2011 Nevada [Member]	Jun. 30, 2012 Michigan [Member]	Dec. 31, 2011 Oregon [Member]	Dec. 31, 2011 Arizona [Member]	Dec. 31, 2011 Texas [Member]	Jun. 30, 2012 Minimum [Member]	Jun. 30, 2012 Maximum [Member]	Jun. 30, 2012 Three Borrowers [Member]
Concentration Risk, Percentage										66.00%	37.00%	13.00%	27.00%	20.00%	10.00%
Percentage Of Real Estate Loan Portfolio						44.50%	28.60%		20.90%							4.50%	15.00%	41.00%
InterestRateOnInvestmentsInRealEstateLoans			7.75%	9.00%
Investment in real estate loans, net of allowance for loan losses of $1,629,000 at June 30, 2012 and $5,485,000 at December 31, 2011 (in Dollars) (in Dollars)	$ 11,739,000	$ 10,767,000			$ 5,500,000	$ 5,900,000		$ 4,600,000	$ 2,800,000