CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Mar. 31, 2013	Dec. 31, 2012
Valuation allowance for other receivables (in dollars)	$ 10,066	$ 7,506
Common stock, par value (in dollars per share)	$ 0.00001	$ 0.00001
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	999,300,000	999,300,000
Common stock, shares issued	3,756,842	3,756,842
Treasury stock, shares	529,695	529,695