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Segment Information (By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2015	Jun. 27, 2014	Jun. 26, 2015	Jun. 27, 2014	Dec. 26, 2014
Segment Reporting Information [Line Items]
Segment Net Sales	$ 335,489	$ 322,549	$ 641,942	$ 612,511
Segment Operating Earnings	83,891	85,848	149,122	160,553
Segment Assets	1,418,908		1,418,908		$ 1,544,778
Industrial [Member]
Segment Reporting Information [Line Items]
Segment Net Sales	153,502	156,578	296,768	308,624
Segment Operating Earnings	50,738	50,892	93,678	99,997
Segment Assets	567,759		567,759		548,868
Process [Member]
Segment Reporting Information [Line Items]
Segment Net Sales	71,946	54,850	139,627	107,860
Segment Operating Earnings	13,988	13,572	24,486	26,215
Segment Assets	499,113		499,113		304,903
Contractor [Member]
Segment Reporting Information [Line Items]
Segment Net Sales	110,041	111,121	205,547	196,027
Segment Operating Earnings	27,040	28,289	46,415	46,539
Segment Assets	214,092		214,092		176,757
Unallocated corporate [Member]
Segment Reporting Information [Line Items]
Segment Operating Earnings	(7,875)	$ (6,905)	(15,457)	$ (12,198)
Segment Assets	$ 137,944		$ 137,944		$ 514,250

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 210



-SubTopic 10



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-Name Accounting Standards Codification



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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



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