Federal income tax expense differs from the amount computed as follows (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Computed "expected" income tax (benefit) expense	$ (1,955)	$ (2,556)	$ (34,368)
Book to tax differences in gains on sale of property.	(8,503)	2,184	419
Book to tax differences from entities not consolidated for tax purposes	(3,831)	(3,228)	(3,638)
Book to tax differences of depreciation and amortization	1,460	1,556	1,871
Operating Loss Carry forwards Valuation Allowance	5,387	9,283	51,685
Other book to tax differences	7,442	(7,239)	(15,969)
Alternative Minimum Tax	$ 0	$ 0	$ 0