Goodwill and Other Intangibles (Schedule of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Cost	$ 47,817	$ 47,917
Accumulated Amortization	(14,479)	(11,588)
Net	33,338	36,329
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Cost	31,977	32,065
Accumulated Amortization	(8,524)	(6,553)
Net	23,453	25,512
Weighted-Average Amortization Life (in Years)	19 years 8 months 12 days
Trademarks, trade names and brand names
Finite-Lived Intangible Assets [Line Items]
Cost	8,419	8,401
Accumulated Amortization	(2,004)	(1,499)
Net	6,415	6,902
Weighted-Average Amortization Life (in Years)	16 years 2 months 12 days
Patents and patent applications
Finite-Lived Intangible Assets [Line Items]
Cost	5,354	5,098
Accumulated Amortization	(2,229)	(1,865)
Net	3,125	3,233
Weighted-Average Amortization Life (in Years)	15 years 10 months 24 days
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Cost	709	906
Accumulated Amortization	(671)	(839)
Net	38	67
Weighted-Average Amortization Life (in Years)	8 years 9 months 18 days
Other
Finite-Lived Intangible Assets [Line Items]
Cost	1,358	1,447
Accumulated Amortization	(1,051)	(832)
Net	$ 307	$ 615
Weighted-Average Amortization Life (in Years)	6 years 7 months 6 days