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4. Supplemental Cash Flow Information - (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Supplemental Cash Flow Elements [Abstract]    
Net Income Attributable to Parent $ (3,369,613) $ 977,414
Share-based Compensation 13,500 11,700
Other than temporary impairment losses on investments 0 800
(Gains) losses from change in fair market value of equity securities and loan receivable 4,545,100 (1,179,400)
Decrease in accounts receivable (46,800) 1,300
Decrease (increase) in inventories (35,500) 5,800
Increase in other current assets (33,700) (37,500)
Decrease in accounts payable and other current liabilities (38,900) (44,500)
Increase in income taxes payable 7,800 27,300
Increase in deferred income taxes (1,028,500) 274,800
Increase in other long term liabilities 200 43,800
Reduction in the carrying amount of right-of-use assets 10,000 9,800
Depreciation and amortization 32,000 32,700
Other 200 (500)
Payments of operating lease liabilities (9,500) (9,900)
Net cash provided by operating activities 46,315 113,610
Noncash or Part Noncash Acquisition, Investments Acquired 13,200 0
Noncash or Part Noncash Acquisition, Accounts Receivable Acquired 2,000 0
Noncash or Part Noncash Acquisition, Fixed Assets Acquired $ 1,500 $ 4,700