Goodwill and Intangible Assets (Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 45,195	$ 44,833
Accumulated Amortization	(15,248)	(14,034)
Net Carrying Amount	29,947	30,799
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,234	7,843
Accumulated Amortization	(2,145)	(2,045)
Net Carrying Amount	6,089	5,798
Distribution Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,176	5,176
Accumulated Amortization	(1,421)	(1,301)
Net Carrying Amount	3,755	3,875
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,733	2,733
Accumulated Amortization	(959)	(861)
Net Carrying Amount	1,774	1,872
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,299	7,311
Accumulated Amortization	(1,479)	(1,362)
Net Carrying Amount	5,820	5,949
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,035	1,035
Accumulated Amortization	(219)	(160)
Net Carrying Amount	816	875
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	20,451	20,468
Accumulated Amortization	(8,758)	(8,038)
Net Carrying Amount	11,693	12,430
Royalty Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	267	267
Accumulated Amortization	(267)	(267)
Net Carrying Amount	$ 0	$ 0