Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 2,417	$ 33,909
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	44,831	38,387
(Gain) loss on disposal of assets	(102)	1,223
Interest expense on finance lease liability	0	651
Amortization of debt issuance costs	548	556
Inventory write-down	674	0
Non-cash lease expense	518	419
Share based compensation expense	4,124	2,880
Gain on tax receivable agreements	(37)	0
Provision for credit losses	2,523	0
Changes in operating assets and liabilities:
Accounts receivable and unbilled revenue	(93,477)	(77,639)
Accounts receivable and unbilled revenue—related party	8,239	4,363
Inventories	257	(14,324)
Other assets	7,450	20,477
Accounts payable and accrued liabilities	22,789	44,683
Accounts payable and accrued liabilities—related party	0	(1,000)
Payment of operating lease liability	(523)	(5,091)
Net cash provided by operating activities	231	49,494
Cash flows from investing activities:
Purchases of property and equipment and construction in-progress	(45,395)	(66,333)
Proceeds from sale of assets	317	149
Net cash used in investing activities	(45,078)	(66,184)
Cash flows from financing activities:
Repayments of borrowings on term loan	(438)	(438)
Payments on finance lease and capital lease obligations	(2,470)	(3,282)
Class A Common Stock dividends	(4,090)	(3,415)
Per unit distributions to non-controlling interest unitholders	(1,532)	(2,179)
Other distributions and advance payments to non-controlling interest unitholders	(2,782)	(222)
Share repurchases	0	(18,398)
Net cash used in financing activities	(11,312)	(27,934)
Net decrease in cash and cash equivalents	(56,159)	(44,624)
Cash and cash equivalents—beginning of period	112,690	103,312
Cash and cash equivalents—end of period	56,531	58,688
Supplemental disclosure of cash flow information:
Cash paid for income taxes	0	0
Cash paid for interest	2,927	3,267
Non-cash investing and financing activities:
Capital expenditures included in accounts payable and accrued liabilities	$ 19,636	$ 30,478