Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 5,626	$ 5,687
Customer receivables, net of allowance of $36 and $63 at March 31, 2020 and December 31, 2019, respectively	186,009	183,706
Other receivables	16,040	15,253
Prepaid insurance and licenses	17,110	11,326
Operating supplies	7,344	7,193
Assets held for sale	15,570	17,732
Other current assets	15,945	15,831
Total current assets	263,644	256,728
Property and equipment, at cost	934,871	880,101
Less accumulated depreciation and amortization	(400,452)	(388,318)
Net property and equipment	534,419	491,783
Other assets
Operating lease right of use assets	280,106	276,618
Goodwill	57,708	57,708
Intangible assets, net	26,789	27,214
Other	30,865	30,058
Total other assets	395,468	391,598
Total assets	1,193,531	1,140,109
Current liabilities
Accounts payable	79,012	68,918
Book overdraft	3,689	1,313
Accrued wages and benefits	25,955	24,110
Claims and insurance accruals, current	48,734	51,910
Other accrued liabilities	6,431	9,127
Current portion of operating lease liabilities	68,021	69,866
Current maturities of long-term debt and finance leases	81,700	80,247
Total current liabilities	313,542	305,491
Long-term debt and finance leases, net of current maturities	362,722	315,797
Less debt issuance costs	(324)	(1,223)
Net long-term debt and finance leases	362,398	314,574
Deferred income taxes	18,810	20,692
Other long-term liabilities	4,852	5,249
Claims and insurance accruals, long-term	59,466	56,910
Noncurrent operating lease liabilities	211,694	206,357
Commitments and contingencies (Note 7)
Stockholders' Equity abstract
Additional paid-in capital	251,862	250,700
Accumulated deficit	(30,198)	(20,982)
Total stockholders' equity	222,157	230,208
Noncontrolling interest	612	628
Total stockholders' equity	222,769	230,836
Total liabilities and stockholders' equity	1,193,531	1,140,109
Class A common stock
Stockholders' Equity abstract
Common stock	335	333
Common Class B [Member]
Stockholders' Equity abstract
Common stock	$ 158	$ 157