Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenues	$ 507,148	$ 569,984
Operating expenses:
Purchased transportation costs	342,775	400,963
Personnel and related benefits	79,215	75,887
Other operating expenses	89,614	97,499
Depreciation and amortization	15,542	9,065
Impairment charges	778	0
Total operating expenses	527,924	583,414
Operating loss	(20,776)	(13,430)
Interest expense:	3,882	9,543
Interest expense - preferred stock	0	7,115
Interest expense - debt	3,882	2,428
Total interest expense	3,882	9,543
Loss on debt restructuring	2,270	0
Loss before income taxes	(26,928)	(22,973)
Provision for income taxes	71	670
Net loss	$ (26,999)	$ (23,643)
Loss per share:
Basic (in dollars per share)	$ (1.78)	$ (15.37)
Diluted (in dollars per share)	$ (1.78)	$ (15.37)
Weighted average common stock outstanding:
Basic (in shares)	15,179	1,538
Diluted (in shares)	15,179	1,538