Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 69,534	$ 68,978
Accounts receivable—trade, net of provision for credit losses of $773 and $773, respectively	200,711	244,433
Unbilled revenue	135,753	69,516
Inventories	129,338	118,568
Prepaid and other current assets (including $4,417 and $24,708, respectively, from related parties)	47,887	65,638
Total current assets	583,223	567,133
Property and equipment, net	1,105,938	1,120,950
Finance lease right-of-use assets	36,155	38,733
Operating lease right-of-use assets	69,996	75,878
Deferred tax assets	77,949	81,888
Other tax asset	43,514	5,360
Total assets	1,916,775	1,889,942
Current liabilities:
Accounts payable (including $1,699 and $0, respectively, to related parties)	184,799	193,338
Accrued liabilities (including $2,811 and $0, respectively, to related parties)	166,193	118,383
Current portion of long-term debt, net of discount of $1,380 and $1,386, respectively	370	364
Current portion of finance lease liabilities	19,197	20,580
Current portion of operating lease liabilities	22,990	23,481
Total current liabilities	393,549	356,146
Long-term debt, net of discount of $711 and $1,054, respectively, less current portion	105,317	105,411
Deferred tax liability	0	0
Payable pursuant to tax receivable agreements (including $52,997 and $27,173, respectively, to related parties)	84,668	56,594
Noncurrent portion of finance lease liabilities	9,752	11,318
Noncurrent portion of operating lease liabilities	45,754	50,430
Total liabilities	639,040	579,899
Commitments & contingencies (Note 15)
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	1,212,354	1,125,554
(Accumulated deficit) retained earnings	(10,915)	23,288
Accumulated other comprehensive income	1,318	0
Total stockholders’ equity	1,204,552	1,150,637
Non-controlling interest	73,183	159,406
Total equity	1,277,735	1,310,043
Total liabilities and equity	1,916,775	1,889,942
Class A, $0.01 par value, 400,000,000 shares authorized and 169,260,130 issued and outstanding as of March 31, 2021 and 157,952,213 issued and outstanding as of December 31, 2020
Common Stock:
Common stock, par value $0.01	1,692	1,579
Class B, $0.01 par value, 400,000,000 shares authorized and 10,280,825 issued and outstanding as of March 31, 2021 and 21,550,282 issued and outstanding as of December 31, 2020
Common Stock:
Common stock, par value $0.01	$ 103	$ 216