Annual report pursuant to Section 13 and 15(d)

Business Acquisition (Schedule of Pro Forma Information) (Details)

v2.4.1.9
Business Acquisition (Schedule of Pro Forma Information) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Business Combinations [Abstract]    
Pro forma net sales $ 2,144,022us-gaap_BusinessAcquisitionsProFormaRevenue $ 1,767,505us-gaap_BusinessAcquisitionsProFormaRevenue
Pro forma net income $ 145,483us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss $ 94,170us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss
Earnings Per Share    
Pro Forma earnings per share, basic $ 2.08us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic $ 1.37us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic
Pro forma earnings per share, diluted $ 2.06us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted $ 1.36us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted