Discontinued Operations (Details - Balance Sheet) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued Operation, Cash and Cash Equivalents		$ 790	$ 1,569
Discontinued Operation, Receivables, Net		241,302	423,420
Discontinued Operation, Inventory, Current		323,277	350,457
Discontinued Operation, Prepaid and Other Assets, Current		17,849	23,219
Discontinued Operation, Assets, Current		583,218	798,665
Discontinued Operation, Property, Plant and Equipment, Net		1,315,213	1,264,604
Discontinued Operation, Goodwill		274,540	274,302
Discontinued Operation, Intangible Assets, Net		13,430	14,827
Discontinued Operation, Long-Term Investments		33,086	33,400
Discontinued Operation, Operating Lease, Right-of-Use Asset		45,872	45,932
Discontinued Operation, Other Assets, Noncurrent		3,610	2,962
Noncurrent assets of discontinued operations	$ 0	1,685,751	1,636,027
Discontinued Operation, Total Assets		2,268,969	2,434,692
Discontinued Operation, Short-Term Debt		208,000	100,000
Discontinued Operation, Long-Term Debt, Current Maturities		30,211	128,134
Discontinued Operation, Accounts Payable		122,309	174,585
Discontinued Operation, Taxes Payable, Current		8,502	(12,500)
Discontinued Operation, Employee-related Liabilities, Current		29,192	28,621
Discontinued Operation, Operating Lease, Liability, Current		13,210	13,666
Discontinued Operation, Accrued Liabilities, Current		76,200	69,811
Current liabilities of discontinued operations	0	487,624	502,317
Discontinued Operation, Long-Term Debt, Excluding Current Maturities		445,546	709,632
Discontinued Operation, Deferred Income Tax Liabilities, Net		175,804	169,484
Discontinued Operation, Asset Retirement Obligations, Noncurrent		33,015	27,779
Discontinued Operation, Operating Lease Liability, Noncurrent		32,663	32,266
Discontinued Operation, Other Liabilities, Noncurrent		78,876	88,284
Noncurrent liabilities of discontinued operations	$ 0	765,904	1,027,445
Discontinued Operation, Total Liabilities		$ 1,253,528	$ 1,529,762