Acquisitions - Other Acquisitions (Details) (USD $)	3 Months Ended			12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Series of Individually Immaterial Business Acquisitions [Member]	Dec. 31, 2013 Business Acquisition, Martinic [Member]	Dec. 31, 2013 Business Acquisition, Wulfrun [Member]
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Cash Paid			$ 28,000,000
Net sales	$ 367,740,000	$ 337,780,000		$ 13,000,000	$ 10,000,000