CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) AND - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS) AND
Operating revenue	$ 130,924	$ 132,583	$ 398,520	$ 392,977
Operating expenses:
Salaries, wages and employee benefits	32,846	31,540	102,742	95,423
Fuel and fuel taxes	13,842	13,823	41,575	41,286
Depreciation and amortization	9,652	6,735	27,595	21,392
Insurance and claims	2,427	2,916	7,715	7,785
Equipment rent	6,499	5,946	20,939	16,889
Operations and maintenance	8,829	8,237	24,583	25,111
Purchased transportation	51,281	52,640	148,634	157,495
Operating taxes and licenses	1,218	1,136	3,646	2,900
Communications and utilities	967	674	2,453	2,064
Gain on disposal of assets, net	(696)	(901)	(700)	(1,466)
Impairment of assets held for sale	1	0	368	0
Reversal of restructuring, impairment and other costs	0	0	0	(639)
Other	4,092	4,034	13,100	12,231
Total operating expenses	130,958	126,780	392,650	380,471
Operating (loss) income	(34)	5,803	5,870	12,506
Other expenses:
Interest expense, net	1,615	811	4,951	2,462
Other, net	145	420	453	653
Total other expenses, net	1,760	1,231	5,404	3,115
(Loss) income before income taxes	(1,794)	4,572	466	9,391
Income tax (benefit) expense	(421)	1,272	337	2,512
Consolidated net (loss) income and comprehensive (loss) income	$ (1,373)	$ 3,300	$ 129	$ 6,879
Net (loss) earnings per share:
Average shares outstanding (basic) (in shares)	8,564	8,223	8,509	8,170
Basic (loss) earnings per share (in dollars per share)	$ (0.16)	$ 0.40	$ 0.02	$ 0.84
Average shares outstanding (diluted) (in shares)	8,564	8,240	8,522	8,193
Diluted (loss) earnings per share (in dollars per share)	$ (0.16)	$ 0.40	$ 0.02	$ 0.84