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Acquisitions and Purchase Accounting Estimated Fair Values of Assets Acquired and Liabilities Assumed for Viking Acquisition (Details) (Details) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2012
Dec. 31, 2012
Viking Range Corporation [Member]
Business Acquisition [Line Items]    
Cash   $ 6,900
Current assets 4,011 40,794
Property, plant and equipment 268 76,693
Goodwill 18,931 144,833
Other intangibles 5,620 152,500
Business Acquisition, Purchase Price Allocation, Current Liabilities (1,836) (52,202)
Business Acquisition, Purchase Price Allocation, Other Noncurrent Liabilities (3,134) (2,386)
Business Acquisition, Purchase Price Allocation, Assets Acquired (Liabilities Assumed), Net $ 27,134 $ 379,736