Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Receivables allowance	$ 317,659	$ 317,659
Common stock, par value (in dollars per share)	$ .01	$ .01
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	28,366,478	25,908,978
Common stock, shares outstanding (in shares)	28,366,478	25,908,978
5% preferred stock [Member]
Preferred stock, par value (in dollars per share)	$ 25	$ 25
Preferred stock, shares authorized (in shares)	35,920	35,920
Preferred stock, shares issued (in shares)	2,427	2,427
Preferred stock, shares outstanding (in shares)	2,427	2,427
Series B Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	20,000	20,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series C Preferred Stock [Member]
Preferred stock, par value (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares authorized (in shares)	750	750
Preferred stock, shares issued (in shares)	375	375
Preferred stock, shares outstanding (in shares)	375	375