CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Mar. 31, 2012	Dec. 31, 2011
Valuation allowance for other receivables (in dollars)	$ 5,592	$ 5,592
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common Class A [Member]
Common stock, shares authorized	700,000	700,000
Common stock, shares issued	471,633	471,633
Treasury stock, shares	29,100	29,100
Common Class B [Member]
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	3,742,842	3,742,842
Treasury stock, shares	529,695	529,695