v2.4.0.8

10. Income taxes: (Details) - Expiration of Credit Taxes (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2007	Dec. 31, 2006	Dec. 31, 2005	Dec. 31, 2004	Dec. 31, 2003	Dec. 31, 2002	Dec. 31, 2001	Dec. 31, 2000	Dec. 31, 1999	Dec. 31, 2033
Expiration of Credit Taxes [Abstract]
	$ 2,568,328	$ 1,638,421	$ 1,746,615	$ 822,678	$ 1,723,146	$ 1,599,919	$ 1,479,818	$ 1,532,322	$ 1,304,283	$ 1,250,783	$ 2,775,900	$ 2,503,951	$ 3,681,189	$ 4,425,866	$ 88,022
	2033	2032	2031	2030	2029	2028	2027	2026	2025	2024	2023	2022	2021	2020	2019
Total	$ 29,141,241															$ 29,141,241

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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The expiration date of each operating loss carryforward included in total operating loss carryforwards, or the applicable range of such expiration dates.

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