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Segment Information (By Segment) (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 28, 2012
Sep. 30, 2011
Sep. 28, 2012
Sep. 30, 2011
Dec. 30, 2011
Segment Reporting Information [Line Items]          
Segment Net Sales $ 256,472,000 $ 227,347,000 $ 758,778,000 $ 679,689,000  
Segment Operating Earnings Reconciliation 56,331,000 56,802,000 166,775,000 172,126,000  
Segment Assets Reconciliation 1,299,968,000   1,299,968,000   874,309,000
Expenses Related To Pending Acquisiton 4,000,000 3,000,000 15,000,000 6,000,000  
Investment in businesses held separate 426,813,000   426,813,000   0
Industrial [Member]
          
Segment Reporting Information [Line Items]          
Segment Net Sales 154,704,000 124,502,000 447,027,000 376,636,000  
Segment Operating Earnings Reconciliation 47,162,000 42,632,000 138,646,000 132,996,000  
Segment Assets Reconciliation 562,736,000   562,736,000   302,805,000
Contractor [Member]
          
Segment Reporting Information [Line Items]          
Segment Net Sales 74,851,000 77,757,000 228,943,000 228,664,000  
Segment Operating Earnings Reconciliation 12,835,000 16,700,000 43,339,000 44,239,000  
Segment Assets Reconciliation 150,788,000   150,788,000   146,556,000
Lubrication [Member]
          
Segment Reporting Information [Line Items]          
Segment Net Sales 26,917,000 25,088,000 82,808,000 74,389,000  
Segment Operating Earnings Reconciliation 5,356,000 4,380,000 16,988,000 13,652,000  
Segment Assets Reconciliation 85,181,000   85,181,000   91,137,000
Unallocated corporate [Member]
          
Segment Reporting Information [Line Items]          
Segment Operating Earnings Reconciliation (9,022,000) (6,910,000) (32,198,000) (18,761,000)  
Segment Assets Reconciliation $ 501,263,000   $ 501,263,000   $ 333,811,000