7. Income Taxes: Summary of Operating Loss Carryforwards (Details) (USD $)	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
Deferred Tax Assets, Operating Loss Carryforwards	$ 20,263	$ 11,825	$ 13,493	$ 16,971	$ 14,674	$ 19,881	$ 15,821	$ 12,692	$ 1,731	$ 18,081	$ 13,858	$ 13,537	$ 8,867
Tax Credit Carryforward Expiration Dates	2032	2031	2030	2029	2028	2027	2026	2025	2024	2023	2022	2021	2020
Unrecognized Tax Benefits Resulting in Net Operating Loss Carryforward	6,889	4,021	4,558	5,770	4,989	6,760	5,379	4,315	589	6,148	4,712	4,603	3,015
Tax Credit Carryforward, Deferred Tax Asset	$ (6,889)	$ (4,021)	$ (4,558)	$ (5,770)	$ (4,989)	$ (6,760)	$ (5,379)	$ (4,315)	$ (589)	$ (6,148)	$ (4,712)	$ (4,603)	$ (3,015)

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

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The cumulative amount of future tax effects arising from the unused tax credit carryforward that cannot be utilized on the tax return during a year that may be carried forward to reduce taxable income or taxes payable in a future year; a tax credit carryforward is the amount by which tax credits available for utilization exceed statutory limitations.

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- Definition

Amount of an unrecognized tax benefit that is directly related to a position taken in a tax year that results in a net operating loss carryforward. This amount is presented as a reduction of the related deferred tax asset in the balance sheet if that deferred tax asset is not used. This amount is presented separately from the deferred tax asset for a net operating loss carryforward if this unrelated tax benefit is associated with a different tax position.

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