UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net income (loss)	$ 2,066	$ (603)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	15,782	14,684
Stock-based compensation expense, net of amount capitalized	3,717	3,143
Deferred income taxes	1,735	(349)
Other, net	740	1,017
Changes in assets and liabilities:
Accounts receivable	4,488	5,890
Current income taxes	24,676	459
Operating lease assets and liabilities, net	129	80
Other assets	(1,030)	(1,365)
Accounts payable	(837)	(4,130)
Other deferrals and accruals	(3,142)	(2,760)
Net cash provided by operating activities	48,324	16,066
Cash flows from investing activities:
Capital expenditures	(67,671)	(45,693)
Proceeds from sale of assets and other	101	86
Net cash used in investing activities	(67,570)	(45,607)
Cash flows from financing activities:
Proceeds from credit facility borrowings	25,000	0
Taxes paid for equity award issuances	(1,156)	(603)
Payments for financing arrangements and other	(263)	(219)
Net cash provided by (used in) financing activities	23,581	(822)
Net increase (decrease) in cash and cash equivalents	4,335	(30,363)
Cash and cash equivalents, beginning of period	44,061	84,344
Cash and cash equivalents, end of period	48,396	53,981
Supplemental Disclosures of Cash Flow Information
Interest paid	1,327	0
Income tax refunds received	$ 25,030	$ 0