CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net loss	$ 54,561	$ (292,720)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion, amortization and impairment	360,641	437,984
Dry holes and abandonments	119	177
Deferred income tax expense (benefit)	930	(54,754)
Stock-based compensation expense	15,460	16,873
Net gain on asset disposals	(10,558)	(5,595)
Amortization of debt discount and issuance costs	626	620
Changes in operating assets and liabilities:
Accounts receivable	(190,142)	(103,241)
Income taxes receivable/payable	2,219	4,378
Inventory and other assets	(12,190)	1,486
Accounts payable	59,469	59,357
Accrued liabilities	(50,541)	(8,009)
Other liabilities	32,653	(4,958)
Net cash provided by operating activities	263,247	51,598
Cash flows from investing activities:
Purchases of property and equipment	(317,553)	(90,837)
Proceeds from disposal of assets	20,305	20,558
Other	(2,404)	(345)
Net cash used in investing activities	(299,652)	(70,624)
Cash flows from financing activities:
Purchases of treasury stock	(12,897)	(3,574)
Dividends paid	(25,936)	(11,303)
Proceeds from borrowings under revolving credit facility	90,000	0
Repayment of borrowings under revolving credit facility	(90,000)	0
Net cash used in financing activities	(38,833)	(14,877)
Effect of foreign exchange rate changes on cash	449	272
Net decrease in cash and cash equivalents	(74,789)	(33,631)
Cash and cash equivalents at beginning of period	117,524	224,915
Cash and cash equivalents at end of period	42,735	191,284
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	42,735	191,284
Net cash received (paid) during the period for:
Interest, net of capitalized interest of $689 in 2022 and $117 in 2021	(31,332)	(31,031)
Income taxes	(1,166)	4,196
Non-cash investing and financing activities:
Net increase in payables for purchases of property and equipment	14,175	14,801
Net increase in deposits on equipment purchases	(7,556)	(66)
Cashless exercise of stock options	$ 10,368	$ 0