Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED STATEMENTS OF CASH FLOWS

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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) income $ (54,185) $ (107,020) $ 163,010
Adjustments to reconcile net (loss) income to net cash provided by operating activities:      
Depreciation and amortization 133,377 153,290 145,304
Impairment expense 0 38,002 3,405
Deferred income tax (benefit) expense (14,288) (27,701) 48,758
Amortization of deferred debt issuance costs 542 543 542
Stock‑based compensation 11,519 9,100 7,776
Provision for credit losses 282 448 949
Loss on disposal of assets 64,646 58,136 106,812
Changes in operating assets and liabilities:      
Accounts receivable (43,742) 127,491 (10,177)
Other current assets 310 1,978 1,351
Inventories (1,220) (293) 3,917
Prepaid expenses 4,463 (232) (4,386)
Accounts payable 51,764 (95,697) (25,242)
Accrued liabilities 1,246 (18,527) 13,088
Accrued interest 0 (394) 183
Net cash provided by operating activities 154,714 139,124 455,290
CASH FLOWS FROM INVESTING ACTIVITIES:      
Capital expenditures (143,523) (100,603) (502,894)
Proceeds from sale of assets 39,231 6,386 7,595
Net cash used in investing activities (104,292) (94,217) (495,299)
CASH FLOWS FROM FINANCING ACTIVITIES:      
Proceeds from borrowings 0 0 110,000
Repayments of borrowings 0 (130,000) (50,000)
Payment of finance lease obligation 0 (30) (272)
Proceeds from insurance financing 0 6,821 0
Repayments of insurance financing (5,473) (1,348) (4,547)
Proceeds from exercise of equity awards 4,017 0 1,164
Tax withholdings paid for net settlement of equity awards (5,820) (614) 0
Net cash used in financing activities (7,276) (125,171) 56,345
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 43,146 (80,264) 16,336
CASH AND CASH EQUIVALENTS — Beginning of year 68,772 149,036 132,700
CASH AND CASH EQUIVALENTS — End of year $ 111,918 $ 68,772 $ 149,036