CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Freight	$ 171,245	$ 135,415	$ 446,454	$ 398,466
Brokerage	34,198	25,977	83,723	68,358
Logistics	7,871		10,571
Fuel surcharge	18,008	12,756	48,331	34,562
Total revenue	231,322	174,148	589,079	501,386
Operating expenses:
Salaries, wages and employee benefits	64,955	49,298	174,253	149,861
Fuel	24,734	17,296	64,423	49,076
Operations and maintenance	35,132	27,874	86,332	72,933
Communications	539	370	1,491	1,208
Purchased freight	61,598	42,541	148,945	120,501
Administrative expenses	8,619	5,221	24,019	17,711
Sales and marketing	488	435	1,425	1,280
Taxes and licenses	2,963	2,268	7,855	6,946
Insurance and claims	6,351	5,065	15,516	13,648
Acquisition-related transaction expenses	773		2,255	18
Depreciation and amortization	19,805	16,998	53,758	50,515
(Gain) loss on disposition of revenue property and equipment	(339)	(495)	(513)	158
Impairment of revenue property and equipment		1,195		1,195
Total operating expenses	225,618	168,066	579,759	485,050
Income from operations	5,704	6,082	9,320	16,336
Other (income) expense:
Interest income	(76)	(4)	(130)	(40)
Interest expense	8,624	6,724	21,064	17,521
Write-off of unamortized deferred financing fees			3,883
Other	(32)	(64)	(247)	(266)
Total other expense	8,516	6,656	24,570	17,215
Loss before provision (benefit) for income taxes	(2,812)	(574)	(15,250)	(879)
Provision (benefit) for income taxes	(2,862)	683	(3,448)	607
Net income (loss)	50	(1,257)	(11,802)	(1,486)
Other comprehensive income (loss):
Unrealized income (loss) on interest rate swaps		61	52	(1)
Foreign currency translation adjustments	526		1,032
Comprehensive income (loss)	576	(1,196)	(10,718)	(1,487)
Net income (loss)	50	(1,257)	(11,802)	(1,486)
Net loss attributable to common stockholders	$ (1,175)	$ (2,500)	$ (15,527)	$ (5,215)
Net income (loss) per common share:
Basic and Diluted	$ (0.03)	$ (0.12)	$ (0.45)	$ (0.25)
Weighted-average common shares outstanding:
Basic and Diluted	39,359,523	20,980,961	34,790,861	20,980,961
Series A
Other comprehensive income (loss):
convertible preferred stockholders	$ (1,225)		$ (2,919)
Weighted-average common shares outstanding:
Dividends declared per convertible preferred share	$ 1.91		$ 2.59
Series B
Other comprehensive income (loss):
convertible preferred stockholders		$ (1,243)	$ (806)	$ (3,729)
Weighted-average common shares outstanding:
Dividends declared per convertible preferred share		$ 18.75	$ 12.50	$ 18.75