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6. Supplemental Cash Flow Information - (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Supplemental Cash Flow Elements [Abstract]    
Net Income Attributable to Parent $ 68,962 $ (3,367,347)
Depreciation and amortization 35,600 33,400
Reduction in the carrying amount of right-of-use assets 10,000 10,000
Share-based Compensation 16,600 13,500
(Gains) losses from change in fair market value of equity securities and loan receivable 17,500 4,545,100
Payments of operating lease liabilities (9,900) (9,500)
Decrease in accounts receivable (1,400) (46,800)
Decrease (increase) in inventories (30,100) (35,500)
Increase in other current assets (16,000) (33,800)
Decrease in accounts payable and other current liabilities 8,200 (38,900)
Increase in income taxes payable 10,400 7,800
Increase in deferred income taxes (13,900) (1,027,800)
Increase in other long term liabilities 2,500 200
Other (400) 100
Net cash provided by operating activities 98,119 50,494
Noncash or Part Noncash Acquisition, Fixed Assets Acquired 8,400 1,500
Noncash or Part Noncash Acquisition, Investments Acquired 6,300 13,200
Noncash or Part Noncash Acquisition, Accounts Receivable Acquired $ 0 $ 2,000