(Intangible Assets Acquired from Business Acquisitions) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Intangible assets
Gross Carrying Amount	$ 99,553	$ 93,053
Accumulated Amortization	(19,314)	(13,175)
Net Carrying Value	80,239	79,878
TL [Member]
Intangible assets
Gross Carrying Amount	66,673	60,173
Accumulated Amortization	(12,378)	(8,356)
Net Carrying Value	54,295	51,817
LTL [Member]
Intangible assets
Gross Carrying Amount	1,358	1,358
Accumulated Amortization	(1,000)	(950)
Net Carrying Value	358	408
Global Solutions [Member]
Intangible assets
Gross Carrying Amount	31,522	31,522
Accumulated Amortization	(5,936)	(3,869)
Net Carrying Value	$ 25,586	$ 27,653