CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Allowance for Doubtful Accounts (in dollars)	$ 0	$ 1,562,556	$ 0
Accumulated depreciation (in dollars)	$ 18,569,676	$ 18,454,410	$ 18,628,310
Common stock, par value (in dollars per share)	$ 0.3	$ 0.3	$ 0.3
Common stock, shares authorized	2,000,000	2,000,000	2,000,000
Common stock, shares issued	583,094	583,094	583,094
Common stock, shares outstanding	519,600	519,600	519,600
Treasury stock, shares	63,494	63,494	63,494