Note D - Investment Property and Accumulated Depreciation (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Retired personal property cost basis	$ 310,000	$ 3,147,000
Retired personal property accumulated depreciation	310,000	3,147,000
Investment Property - Gross Cost - Federal tax basis	21,301,000	20,812,000
Investment Property - Accumulated Depreciation - Federal tax basis	$ 17,540,000	$ 16,981,000