Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 84,819	$ 112,690
Accounts receivable—trade, net of allowances for credit losses of $2,930 and $1,053, respectively	105,936	204,413
Accounts and notes receivable—related party	375	9,629
Unbilled revenue	38,094	38,868
Inventories	76,989	88,547
Prepaid and other current assets	31,431	34,827
Total current assets	337,644	488,974
Property and equipment, net	582,865	651,703
Other assets	29,188	34,339
Finance lease right-of-use assets	31,292	55,337
Operating lease right-of-use assets	77,758	53,076
Total assets	1,058,747	1,283,429
Current liabilities:
Accounts payable	70,009	117,613
Accrued liabilities:
Accrued vendor invoices	15,444	42,753
Operational accruals	20,755	26,753
Accrued salaries and benefits	13,624	28,805
Accrued interest and other (including payables to related parties of $0 and $1,329, respectively)	4,204	10,643
Current portion of long-term debt, net of discount of $1,392 and $1,341, respectively	358	409
Current portion of finance lease liabilities	20,133	23,646
Current portion of operating lease liabilities	21,488	15,873
Total current liabilities	166,015	266,495
Long-term debt, net of discount of $1,399 and $2,485, respectively, less current portion	105,504	105,731
Deferred tax liability	2,673	19,659
Payable pursuant to tax receivable agreements, including payables to related parties of $20,579 and $23,797, respectively	47,512	48,481
Noncurrent portion of finance lease liabilities	6,501	24,884
Noncurrent portion of operating lease liabilities	54,247	36,687
Total liabilities	382,452	501,937
Commitments & contingencies (Note 13)
Stockholders’ equity:
Preferred Stock, $0.01 par value, 10,000 shares authorized and none issued and outstanding	0	0
Common Stock:
Additional paid in capital	446,155	410,596
Retained earnings	60,317	143,105
Total stockholders’ equity	507,602	554,827
Non-controlling interest	168,693	226,665
Total equity	676,295	781,492
Total liabilities and equity	1,058,747	1,283,429
Class A, $0.01 par value, 400,000,000 shares authorized and 85,866,440 issued and outstanding as of September 30, 2020 and 81,885,384 issued and outstanding as of December 31, 2019
Common Stock:
Common stock, par value $0.01	859	819
Class B, $0.01 par value, 400,000,000 shares authorized and 27,067,247 issued and outstanding as of September 30, 2020 and 30,638,960 issued and outstanding as of December 31, 2019
Common Stock:
Common stock, par value $0.01	$ 271	$ 307