Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance	$ 4,468	$ 27,773
Land, buildings and equipment, accumulated depreciation	$ 21,413,966	$ 22,021,944
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	4,170,318	4,147,743
Common stock, shares outstanding	4,170,318	4,147,743