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Manufacturing Consolidation and Tax Strategy (Details Textual) (USD $)	12 Months Ended
	Jan. 02, 2015	Jan. 03, 2015
Schedule Of Restructuring Reserve By Type Of Cost [Line Items]
Estimated Cost Of Project Year Three And Half		$ 6,300,000staa_EstimatedCostOfProjectYearThreeAndHalf
Operating Loss Carryforwards	130,800,000us-gaap_OperatingLossCarryforwards	131,000,000us-gaap_OperatingLossCarryforwards
Restructuring Charges, Total	$ 321,000us-gaap_RestructuringCharges

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Represents the estimated cost of project to be undertaken.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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