Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 29,284	$ 50,311
Accounts receivable, net of allowance for doubtful accounts of $802 and $1,056, respectively	71,570	74,253
Inventories	14,791	15,861
Other current assets	20,885	18,073
Total current assets	136,530	158,498
Property and equipment	442,129	439,043
Accumulated depreciation	(188,080)	(163,333)
Property and equipment, net	254,049	275,710
Intangible assets, net	376	404
Other non-current assets	12,560	8,562
TOTAL ASSETS	403,515	443,174
Current liabilities:
Accounts payable	14,202	13,587
Current portion of long-term debt	2,500	2,500
Other current liabilities	82,151	87,377
Total current liabilities	98,853	103,464
Long-term debt	239,242	241,079
Workers’ compensation, vehicular and health insurance liabilities	27,131	24,775
Other non-current liabilities	32,287	28,336
Commitments and contingencies
Equity:
Preferred stock, $0.01 par value; 10,000,000 authorized and one share issued and outstanding	0	0
Common stock, $0.01 par value; 100,000,000 shares authorized, 20,402,847 and 20,363,198 outstanding	204	204
Additional paid-in capital	267,171	264,945
Retained deficit	(261,373)	(219,629)
Total equity	6,002	45,520
TOTAL LIABILITIES AND EQUITY	$ 403,515	$ 443,174