Note 12. Expired warrants (Details) (USD $)	0 Months Ended
	Nov. 20, 2008	Dec. 31, 2013	Jun. 30, 2013
Class of Stock [Line Items]
Warrant or Right, Fair Value Disclosure	$ 132,114
Proceeds from Issuance or Sale of Equity	1,100,000
Common Stock, Shares, Outstanding	7,526,430	7,526,430	7,526,430
Common Stock [Member]
Class of Stock [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	150,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	1.21
Common Stock [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	1,000,000
Sale of Stock, Price Per Share	$ 1.10
Proceeds from Issuance or Sale of Equity	$ 1,029,000