Acquisition (Details) (Synventive [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2013
Synventive [Member]
Business Acquisition [Line Items]
Net sales	$ 254,684	$ 516,804
Income from continuing operations	21,404	40,301
Net income	$ 26,748	$ 50,262
Basic:
Income from continuing operations (in dollars per share)	$ 0.39	$ 0.74
Net income (in dollars per share)	$ 0.49	$ 0.92
Diluted:
Income from continuing operations (in dollars per share)	$ 0.38	$ 0.73
Net income (in dollars per share)	$ 0.48	$ 0.91

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect per basic share of common stock for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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