18. Net loss per common share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Basic earnings per share
Net loss per share from continuing operations, amount	$ 93,468	$ (181,930)	$ (1,002,464)	$ (413,294)
Net loss per share from continuing operations, number of shares	119,407,668	48,738,855	102,455,451	48,158,563
Net loss per share from continuing operations, per share			$ (0.01)	$ (0.01)
Net income per share from discontinued operations, amount	$ (218,253)	$ 318,901	$ 7,194,389	$ 762,680
Net income per share from discontinued operations, number of shares	119,407,668	48,738,855	102,455,451	48,158,563
Net income per share from discontinued operations, per share			$ 0.07	$ 0.02
Net loss	$ (124,785)	$ 136,971	$ 6,191,925	$ 349,386
Diluted earnings per share
Net loss per share from continuing operations, amount	$ 93,468	$ (181,930)	$ (1,002,464)	$ (413,294)
Net loss per share from continuing operations, number of shares	119,407,668	49,005,555	117,312,150	48,425,263
Net loss per share from continuing operations, per share			$ (0.01)	$ (0.01)
Net income per share from discontinued operations, amount	$ (218,253)	$ 318,901	$ 7,194,389	$ 762,680
Net income per share from discontinued operations, number of shares	119,407,668	49,005,555	117,312,150	48,425,263
Net income per share from discontinued operations, per share			$ 0.05	$ 0.01