Valuation and Qualifying Accounts (Schedule of Valuation and Qualifying Accounts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for doubtful accounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	$ 2,853	$ 2,738	$ 3,077
Net Charged to Costs and Expenses	965	469	31
Translations, Reclassifications and Acquisitions	(185)	(153)	62
Net Write-Offs or Discounts Taken	(149)	(201)	(432)
Balance End of Year	3,484	2,853	2,738
Reserve for sales discounts
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	15,999	16,724	15,005
Net Charged to Costs and Expenses	78,304	79,877	76,184
Translations, Reclassifications and Acquisitions	(145)	(98)	0
Net Write-Offs or Discounts Taken	(79,064)	(80,504)	(74,465)
Balance End of Year	15,094	15,999	16,724
Reserve for inventory obsolescence
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	7,601	8,596	9,099
Net Charged to Costs and Expenses	5,209	2,938	2,586
Translations, Reclassifications and Acquisitions	(454)	(297)	(157)
Net Write-Offs or Discounts Taken	(2,681)	(3,636)	(2,932)
Balance End of Year	9,675	7,601	8,596
Reserve for warranty
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance Beginning of Year	5,913	4,994	5,007
Net Charged to Costs and Expenses	7,732	7,467	6,410
Translations, Reclassifications and Acquisitions	(325)	843	80
Net Write-Offs or Discounts Taken	(7,754)	(7,391)	(6,503)
Balance End of Year	$ 5,566	$ 5,913	$ 4,994