Acquisition (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	0 Months Ended	12 Months Ended
	Aug. 27, 2012	Dec. 31, 2012	Dec. 31, 2011
Business Acquisition [Line Items]
Pro forma adjustments, acqusition related costs			$ 11,776
Synventive [Member]
Business Acquisition [Line Items]
Aggregate purchase price	351,463
Cash paid	305,926
Cash acquired	9,366
Repayments of debt	45,156
Acquisition related costs		2,377
Sales since date of acquisition		60,070
Operating income		1,892
Accounts Receivable, net	42,724
Inventory, net	13,392
Other current assets	3,988
Property, plant and equipment	16,481
Other noncurrent assets	2,841
Intangible assets	126,600
Goodwill	201,029
Total assets acquired	407,055
Current liabilities	(22,665)
Other liabilities	(4,003)
Deferred taxes	(38,290)
Debt assumed	(45,537)
Total liabilities assumed	(110,495)
Net assets acquired	296,560
Net sales		1,331,480	1,316,949
Income from continuing operations		105,066	79,998
Net income		102,018	53,140
Pro forma adjustments, acqusition related costs			9,399
Pro forma adjustments, inventory			3,765
Pro forma adjustments, acquired backlog			1,222
Business Acquistion, Purchase Accouting Adjustments		5,899
Basic:
Income from continuing operations (in dollars per share)		$ 1.92	$ 1.45
Net income (in dollars per share)		$ 1.87	$ 0.96
Diluted:
Income from continuing operations (in dollars per share)		$ 1.90	$ 1.43
Net income (in dollars per share)		$ 1.85	$ 0.95
Parent Company [Member]
Business Acquisition [Line Items]
Pro forma adjustments, acqusition related costs			$ 2,377