Segment Reporting (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) Segment	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Segment				3
Number of operating segments realigned | Segment				2
Schedule of financial data of reportable segments
Revenues	[1]	$ 483,417	$ 517,623	$ 949,963	$ 1,006,457
Operating Income	[1]	1,226	21,651	8,302	42,125
Interest expense	[1]	5,695	4,373	11,303	8,982
Income before provision for income taxes		(4,469)	17,278	(3,001)	33,143
Depreciation and amortization	[1]	9,179	7,434	18,388	14,241
Capital expenditures, cash and non-cash		4,584	17,479	10,631	32,411
Total assets	[2]	1,286,669		1,286,669		$ 1,307,753
Operating Segments | Global Solutions
Schedule of financial data of reportable segments
Revenues		83,627	99,952	167,005	192,698
Operating Income		6,788	6,230	14,192	12,200
Depreciation and amortization		1,233	1,261	2,455	2,537
Capital expenditures, cash and non-cash		1,275	87	2,964	150
Total assets		315,771		315,771		317,453
Operating Segments | TL
Schedule of financial data of reportable segments
Revenues		282,225	285,593	555,569	557,452
Operating Income		(110)	14,583	3,688	27,980
Depreciation and amortization		6,700	5,239	13,442	9,734
Capital expenditures, cash and non-cash		1,856	12,005	4,994	25,689
Total assets		634,596		634,596		656,491
Operating Segments | LTL
Schedule of financial data of reportable segments
Revenues		122,346	138,943	236,699	270,588
Operating Income		781	6,509	2,526	14,251
Depreciation and amortization		865	614	1,734	1,341
Capital expenditures, cash and non-cash		1,303	4,739	2,414	5,270
Total assets		332,190		332,190		330,203
Corporate
Schedule of financial data of reportable segments
Operating Income		(6,233)	(5,671)	(12,104)	(12,306)
Depreciation and amortization		381	320	757	629
Capital expenditures, cash and non-cash		150	648	259	1,302
Total assets		5,973		5,973		8,057
Eliminations
Schedule of financial data of reportable segments
Revenues		(4,781)	$ (6,865)	(9,310)	$ (14,281)
Total assets		$ (1,861)		$ (1,861)		$ (4,451)

[1] See Note 13 “Restatement of Previously Issued Financial Statements

[2] See Note 13 “Restatement of Previously Issued Financial Statements