Goodwill and Other Intangible Assets (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 87,666	$ 87,003
Accumulated Amortization	(27,055)	(23,484)
Net Carrying Amount	60,611	63,519
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	4,215	4,219
Accumulated Amortization	(2,639)	(2,217)
Net Carrying Amount	1,576	2,002
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	377	373
Accumulated Amortization	(150)	(143)
Net Carrying Amount	227	230
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	37,329	36,843
Accumulated Amortization	(7,872)	(6,582)
Net Carrying Amount	29,457	30,261
Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	10,057	10,018
Accumulated Amortization	(3,664)	(3,238)
Net Carrying Amount	6,393	6,780
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	35,688	35,550
Accumulated Amortization	(12,730)	(11,304)
Net Carrying Amount	$ 22,958	$ 24,246
Weighted Average
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period In Years	15 years
Weighted Average | Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period In Years	5 years	5 years
Weighted Average | Patents
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period In Years	10 years	10 years
Weighted Average | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period In Years	18 years	18 years
Weighted Average | Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period In Years	14 years	14 years
Weighted Average | Technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period In Years	14 years	14 years