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Warranty Costs (Narrative) (Details) (USD $) In Millions, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Warranty Costs [Line Items]
Accrued warranty costs, current	$ 0.5	$ 0.5
Mechanical Failure And Defects In Workmanship [Member]
Warranty Costs [Line Items]
Product warranty period	1 year
Timepieces [Member]
Warranty Costs [Line Items]
Product warranty period	2 years

Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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