Valuation and Qualifying Accounts (Schedule of Valuation and Qualifying Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	$ 3,077	$ 3,215	$ 2,852
Net Charged to Costs and Expenses	31	253	995
Translations, Reclassifications and Acquisitions	62	113	(65)
Net Write-Offs or Discounts Taken	(432)	(504)	(567)
Balance End of Year	2,738	3,077	3,215
Reserve for sales discounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	15,005	14,567	11,903
Net Charged to Costs and Expenses	76,184	65,481	62,935
Translations, Reclassifications and Acquisitions	0	(16)	9
Net Write-Offs or Discounts Taken	(74,465)	(65,027)	(60,280)
Balance End of Year	16,724	15,005	14,567
Reserve for inventory obsolescence
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	9,099	7,630	7,506
Net Charged to Costs and Expenses	2,586	2,998	3,403
Translations, Reclassifications and Acquisitions	(157)	79	(123)
Net Write-Offs or Discounts Taken	(2,932)	(1,608)	(3,156)
Balance End of Year	8,596	9,099	7,630
Reserve for warranty
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	5,007	5,083	5,554
Net Charged to Costs and Expenses	6,410	6,646	6,070
Translations, Reclassifications and Acquisitions	80	82	17
Net Write-Offs or Discounts Taken	(6,503)	(6,804)	(6,558)
Balance End of Year	$ 4,994	$ 5,007	$ 5,083