8. Net income per share (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Basic net income (loss) per common share
Net income (loss) from continuing operations	$ (346,923)	$ 94,901	$ (428,009)	$ 118,216
Net income (loss) from Discontinued operations	398,083	4,639	362,342	10,086
Preferred stock dividends		(6,277)
Numerator for basic net income per share	$ 51,160	$ 99,540	$ (65,667)	$ 128,302
Basic net income (loss) per common share
Net income (loss) from continuing operation	$ (0.01)	$ 0.00	$ (0.01)	$ 0.00
Net income (loss) from Discontinue operation	$ 0.01	$ 0.00	$ 0.01	$ 0.00
Net income per common share	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Diluted net income (loss) per common share
Net income (loss) from continuing operation	$ (0.01)	$ 0.00	$ (0.01)	$ 0.00
Net income (loss) from Discontinued operation	$ 0.01	$ 0.00	$ 0.01	$ 0.00
Net income per common share	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Dilutive securities
Preferred Stock A, B, C, D	40,921,516	42,913,524	40,921,516	29,548,522
Options	1,706,114	2,246,241	1,009,965	1,830,888
Warrants	0	0	0	0
Diluted weighted average common shares outstanding and assumed conversion	74,923,524	74,708,287	74,268,111	74,292,934