CONSOLIDATED STATEMENTS OF (LOSS) INCOME AND COMPREHENSIVE (LOSS) INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CONSOLIDATED STATEMENTS OF (LOSS) INCOME AND COMPREHENSIVE (LOSS) INCOME
Operating revenue	$ 522,631	$ 534,060
Operating expenses:
Salaries, wages and employee benefits	136,877	130,407
Fuel and fuel taxes	55,096	55,158
Depreciation and amortization	37,193	28,324
Insurance and claims	27,176	23,240
Equipment rent	10,174	10,840
Operations and maintenance	33,310	33,356
Purchased transportation	194,629	211,132
Operating taxes and licenses	4,843	3,814
Communications and utilities	3,488	2,849
Gain on disposal of assets, net	(495)	(2,361)
Impairment of assets held for sale	786	0
Reversal of restructuring, impairment and other costs	0	(639)
Other	17,239	16,721
Total operating expenses	520,316	512,841
Operating income	2,315	21,219
Other expenses:
Interest expense, net	6,597	3,649
Other, net	572	992
Total other expenses, net	7,169	4,641
(Loss) income before income taxes	(4,854)	16,578
Income tax (benefit) expense	(156)	4,374
Consolidated net (loss) income and comprehensive (loss) income	$ (4,698)	$ 12,204
Net (loss) earnings per share:
Average shares outstanding (basic) (in shares)	8,525	8,194
Basic (loss) earnings per share (in dollars per share)	$ (0.55)	$ 1.49
Average shares outstanding (diluted) (in shares)	8,525	8,218
Diluted (loss) earnings per share (in dollars per share)	$ (0.55)	$ 1.49