5. Commitments and Contingencies: Contingencies (Details) In Thousands, unless otherwise specified	3 Months Ended						3 Months Ended
	Mar. 31, 2013 USD ($)	Mar. 31, 2012 USD ($)	Mar. 31, 2013 Alternative Currency GBP (£)	Mar. 31, 2013 Positive Outcome of Litigation USD ($)	Mar. 31, 2012 Positive Outcome of Litigation USD ($)	Mar. 31, 2013 Insurance Claims USD ($)	Mar. 31, 2013 Pending or Threatened Litigation USD ($)	Dec. 31, 2012 Pending or Threatened Litigation USD ($)
Product Liability Inurance Deductible - Range, minimum						$ 25
Product Liability Inurance Deductible - Range, maximum						250
Product Liability Contingency, Loss Exposure Not Accrued, High Estimate							2,400
Loss Contingency Accrual, at Carrying Value							663	537
Insurance Legal Recovery		4,700			4,700
Gain Contingency, Income Statement Caption		Insurance Legal Recovery or ILR
Loss Contingency, Range of Possible Loss, Maximum				291
Loss Contingency, Balance Sheet Caption				Other Long Term Assets
Payments for Legal Settlements	$ 1,300		£ 800