Goodwill and Intangible Assets, Net (Schedule of Intangible Assets Categories) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	3 years 9 months
Amount	$ 15,470	$ 14,166
Customer Lists and Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	4 years 1 month
Amount	$ 14,014
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	2 years 2 months
Amount	$ 1,018
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Years	3 years 3 months
Amount	$ 438