Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Accounting Policies [Abstract]
Amortized cost basis of the debt securities	$ 12,300,000	$ 12,100,000
Allowance for doubtful accounts receivable, current	$ 2,100,000	$ 4,300,000
Percentage of LIFO inventory	79.00%	78.00%
Effect of LIFO inventory, decrease (increase) in cost of goods sold	$ (50,000)	$ 0	$ 30,000
LIFO Reserve	24,160,000	25,110,000
Property, Plant and Equipment [Line Items]
Reserve for estimated warranty settlements, current	7,000,000	8,200,000
Reserve for estimated warranty settlements, noncurrent	8,300,000	8,000,000
Product development costs	28,100,000	31,100,000	29,700,000
Freight expense	115,200,000	$ 133,400,000	$ 131,000,000
Accumulated foreign earnings considered permanently reinvested	32,400,000
Income tax effect of repatriation of foreign earnings	$ 9,600,000
Antidilutive securities excluding from computation of earnings per share	416,142	493,202	500,058
Insurance liabilities	$ 26,500,000	$ 27,700,000
Land improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful life, minimum	10 years
Land improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful life, minimum	20 years
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Useful life, minimum	10 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Useful life, minimum	40 years
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful life, minimum	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful life, minimum	12 years