CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Total revenue	$ 327,581	$ 160,434
Operating expenses:
Salaries, wages and employee benefits	82,344	50,121
Operations and maintenance	34,563	23,224
Communications	699	404
Administrative expenses	12,137	7,378
Sales and marketing	636	383
Insurance and claims	9,184	4,123
Acquisition-related transaction expenses	440	445
Depreciation and amortization	25,182	16,315
Gain on disposition of revenue property and equipment	(155)	(200)
Total operating expenses	319,824	161,283
Income (loss) from operations	7,757	(849)
Other expense (income):
Interest income	(442)	(4)
Interest expense	10,337	5,896
Write-off of unamortized deferred financing fees		3,883
Other	(959)	(108)
Total other expense	8,936	9,667
Loss before benefit for income taxes	(1,179)	(10,516)
Benefit for income taxes	(382)	(2,770)
Net loss	(797)	(7,746)
Other comprehensive loss:
Unrealized income on interest rate swaps		52
Foreign currency translation adjustments, net of $173 tax expense	(320)
Comprehensive loss	(1,117)	(7,694)
Net loss	(797)	(7,746)
Convertible preferred stockholders dividend	(1,239)
Net loss attributable to common stockholders	$ (2,036)	$ (8,552)
Net loss per common share:
Basic and Diluted (in dollars per share)	$ (0.04)	$ (0.32)
Weighted-average common shares outstanding:
Basic and Diluted (in shares)	54,315,736	26,931,186
Series A
Other comprehensive loss:
Convertible preferred stockholders dividend	$ (1,239)
Weighted-average common shares outstanding:
Dividends declared per convertible preferred share	$ 1.91	$ 0.00
Series B
Other comprehensive loss:
Convertible preferred stockholders dividend		$ (806)
Weighted-average common shares outstanding:
Dividends declared per convertible preferred share		$ 12.50
Freight
Revenues:
Total revenue	$ 240,071	$ 125,555
Operating expenses:
Cost of revenue	117,724	37,586
Brokerage
Revenues:
Total revenue	46,139	20,869
Logistics
Revenues:
Total revenue	10,717
Fuel
Revenues:
Total revenue	30,654	14,010
Operating expenses:
Cost of revenue	33,376	19,223
Service
Operating expenses:
Taxes and licenses	$ 3,694	$ 2,281