CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 42,999	$ 17,237
Accounts receivable trade, net of allowance for doubtful accounts of $5,392 and $5,329, respectively	310,730	341,711
Accounts receivable, related parties	5,493	1,119
Inventories	39,613	44,992
Prepaid expenses and other current assets	26,233	27,093
Total current assets	425,068	432,152
Property and equipment	1,084,096	1,114,378
Accumulated depreciation	(617,740)	(611,530)
Property and equipment held-for-sale, net	890
Total property and equipment, net	467,246	502,848
Right-of-use assets	73,138
Goodwill	266,934	273,801
Other intangible assets, net	139,969	148,377
Other assets	4,502	3,427
Total assets	1,376,857	1,360,605
Current liabilities
Accounts payable	38,530	53,847
Accrued accounts payable	51,209	62,536
Accounts payable and accrued expenses, related parties	3,297	5,056
Accrued salaries and benefits	25,761	22,113
Accrued insurance	13,367	14,849
Sales tax payable	1,185	5,820
Accrued expenses and other current liabilities	12,784	14,560
Current operating lease liabilities	19,488
Current portion of finance lease obligations	248	938
Total current liabilities	165,869	179,719
Long-term operating lease liabilities	72,672
Long-term operating lease liabilities		16,752
Other long-term liabilities	12,197	8,361
Long-term debt		45,000
Total liabilities	250,738	249,832
Commitments and contingencies (Note 10)
Preferred stock, $0.01 par value; 50,000,000 shares authorized; no shares issued and outstanding as of September 30, 2019 and December 31, 2018
Additional paid-in capital	893,293	813,599
Retained earnings	31,367	18,653
Accumulated other comprehensive deficit		(368)
Total stockholders' equity	925,708	832,934
Noncontrolling interests	200,411	277,839
Total equity	1,126,119	1,110,773
Total liabilities and equity	1,376,857	1,360,605
Class A Common Stock
Current liabilities
Common stock	863	790
Total equity	863	790
Class B Common Stock
Current liabilities
Common stock	185	260
Total equity	$ 185	$ 260