Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]
Allowances on accounts receivable	$ 276,302	$ 940,101
Accumulated depreciation on Property and equipment	16,022,230	16,131,570
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	2,000,000	2,000,000
Temporary Equity, Shares Issued	900,000	0
Temporary Equity, Shares Outstanding	900,000	0
Temporary Equity, Redemption Value	$ 9,000,000	$ 0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	56,036,972	55,615,972
Common stock, shares outstanding	48,031,737	47,610,737
Common Stock, held in treasury, shares	8,005,235	8,005,235