Goodwill and Other Intangibles (Schedule of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Cost	$ 70,613	$ 51,330
Accumulated Amortization	(22,277)	(18,112)
Net	48,336	33,218
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	52,565	38,825
Accumulated Amortization	(16,259)	(13,232)
Net	36,306	25,593
Weighted-Average Amortization Life (in Years)	16 years 6 months
Trademarks, trade names and brand names
Finite-Lived Intangible Assets [Line Items]
Cost	10,231	5,048
Accumulated Amortization	(2,116)	(1,634)
Net	8,115	3,414
Weighted-Average Amortization Life (in Years)	17 years 6 months
Patents and patent applications
Finite-Lived Intangible Assets [Line Items]
Cost	5,103	4,789
Accumulated Amortization	(1,870)	(1,523)
Net	3,233	3,266
Weighted-Average Amortization Life (in Years)	15 years 6 months
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Cost	906	906
Accumulated Amortization	(839)	(809)
Net	67	97
Weighted-Average Amortization Life (in Years)	7 years 1 month 6 days
Other
Finite-Lived Intangible Assets [Line Items]
Cost	1,808	1,762
Accumulated Amortization	(1,193)	(914)
Net	$ 615	$ 848
Weighted-Average Amortization Life (in Years)	6 years 1 month 6 days