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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss	$ (131,891)	$ (307,045)	$ (64,761)
Adjustments to reconcile net loss to net cash provided by operating activities:
Impairment expense	(0)	287,454	49,036
Depreciation and amortization expense	123,866	113,693	122,503
Equity in income of joint ventures	(16,747)	(13,589)	(9,639)
Stock-based compensation expense	54,162	0	0
Changes in fair value of investments	(511)	0	0
Elimination of unrealized profit on sales to joint ventures	174	2,085	3,558
Debt issuance expense	5,166	0	0
Gain on disposal of assets	(1,000)	(10,085)	0
Deferred taxes	(737)	(20,596)	(18,296)
Unrealized foreign exchange	1,407	2,106	337
Changes in assets and liabilities:
Accounts receivable, net	(20,256)	38,486	(24,172)
Inventories	906	2,780	(6,797)
Other assets	12,683	532	(1,966)
Accounts payable and accrued liabilities	5,371	(25,161)	18,892
Other liabilities	(5,981)	7,150	1,119
Income taxes, net	(2,056)	(4,241)	3,548
Dividends received from joint ventures	4,058	3,646	3,128
Other	(12,470)	(6,824)	4,719
Net cash provided by operating activities	16,144	70,391	81,209
Cash flows from investing activities:
Capital expenditures	(81,511)	(112,387)	(104,062)
Cash and cash equivalents and restricted cash acquired in the Merger	189,739
Proceeds from disposal of assets	3,818	15,614	10
Payment for acquisition of business, net of cash acquired			(47,882)
Net cash provided by (used in) investing activities	112,046	(96,773)	(151,934)
Cash flows from financing activities:
Proceeds from release of collateral deposits	162	2,271	28,280
Repayment of financed insurance premium	(227)	0	0
Payments of loan issuance and other transaction costs	(5,123)	(1,095)	(3,036)
Payment of withholding taxes on stock-based compensation plans	(818)	0	0
Repayments of finance leases	(1,170)	(1,801)	(3,322)
Net cash provided by (used in) financing activities	(7,176)	(625)	21,922
Effect of exchange rate changes on cash and cash equivalents	(1,876)	631	566
Net increase (decrease) to cash and cash equivalents and restricted cash	119,138	(26,376)	(48,237)
Cash and cash equivalents and restricted cash at beginning of year	120,709	147,085	195,322
Cash and cash equivalents and restricted cash at end of year	$ 239,847	$ 120,709	$ 147,085

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