Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets, Current [Abstract]
Cash	$ 989	$ 71
Accounts receivable, net of allowance for doubtful accounts of $575 and $639, respectively	56,003	55,138
Other receivables	5,104	2,787
Inventories	722	458
Assets held for sale	2,611	112
Prepaid expenses and other current assets	7,224	6,025
Total current assets	72,653	64,591
Property and equipment:
Land and structures	32,434	31,452
Revenue equipment	280,623	252,484
Service, office and other equipment	28,094	26,209
Property and equipment, at cost	341,151	310,145
Accumulated depreciation and amortization	(115,766)	(122,329)
Property and equipment, net	225,385	187,816
Goodwill	4,926	0
Other intangibles, net	17,837	0
Other assets	1,003	1,448
Total assets	321,804	253,855
Liabilities, Current [Abstract]
Accounts payable	22,453	24,332
Current portion of insurance and claim accruals	15,852	13,552
Accrued expenses	8,977	9,108
Current maturities of capital leases	17,292	12,929
Insurance premium financing	4,435	4,115
Total current liabilities	69,009	64,036
Deferred gain	84	480
Long-term debt	85,300	61,225
Capital lease, less current maturities	53,460	29,216
Deferred income taxes	23,518	21,136
Insurance and claims accruals, less current portions	9,963	11,274
Total liabilities	241,334	187,367
Stockholders’ equity:
Preferred Stock, $0.01 par value; 1,000,000 shares authorized; none issued	0	0
Common Stock, $0.01 par value; 30,000,000 shares authorized; issued 12,011,495 shares, and 12,142,391 shares, respectively	120	121
Additional paid-in capital	66,433	68,667
Retained earnings	77,664	65,460
Less treasury stock, at cost (3,650,060 shares, and 3,853,064 shares, respectively)	(63,747)	(67,760)
Total stockholders’ equity	80,470	66,488
Total liabilities and stockholders’ equity	$ 321,804	$ 253,855