Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 4,442	$ 9,892
Customer receivables, net of allowance of $75 and $59 at September 30, 2019 and December 31, 2018, respectively	193,047	190,254
Other receivables	18,345	20,430
Prepaid insurance and licenses	23,221	11,035
Operating supplies	7,706	7,324
Assets held for sale	10,399	33,225
Other current assets	19,057	13,374
Total current assets	276,217	285,534
Property and equipment, at cost	939,889	898,530
Less accumulated depreciation and amortization	(403,891)	(379,813)
Net property and equipment	535,998	518,717
Other assets
Operating lease right of use assets	250,062
Goodwill	57,708	57,708
Intangible assets, net	27,642	28,913
Other	31,067	19,615
Total other assets	366,479	106,236
Total assets	1,178,694	910,487
Current liabilities
Accounts payable	87,161	63,808
Book overdraft	3,833
Accrued wages and benefits	24,085	24,960
Claims and insurance accruals, current	51,125	47,442
Other accrued liabilities	9,433	8,120
Liabilities associated with assets held for sale		6,856
Current portion of operating lease liabilities	70,246
Current maturities of long-term debt and finance leases	82,669	113,094
Total current liabilities	328,552	264,280
Long-term debt and finance leases, net of current maturities	351,492	312,819
Less debt issuance costs	(1,301)	(1,347)
Net long-term debt and finance leases	350,191	311,472
Deferred income taxes	20,996	19,978
Long-term liabilities associated with assets held for sale		8,353
Other long-term liabilities	6,599	7,713
Claims and insurance accruals, long-term	53,370	60,304
Noncurrent operating lease liabilities	179,600
Commitments and contingencies (Notes 7 and 8)
Stockholders' Equity
Additional paid-in capital	249,665	251,742
Accumulated deficit	(11,388)	(17,335)
Total stockholders' equity	238,767	234,891
Noncontrolling interest	619	3,496
Total stockholders' equity	239,386	238,387
Total liabilities and stockholders' equity	1,178,694	910,487
Common Class A [Member]
Stockholders' Equity
Common stock	333	329
Common Class B [Member]
Stockholders' Equity
Common stock	$ 157	$ 155