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Income Taxes
 6 Months Ended
Jun. 30, 2023
Income Tax Disclosure [Abstract]  
Income Taxes

(7) Income Taxes

The Company computes its year-to-date provision for (benefit from) income taxes by applying the estimated annual effective tax rate to year-to-date pretax income or loss and adjusts the provision for (benefit from) income taxes for discrete tax items recorded in the period. The estimated effective tax rate is subject to fluctuation based on the level and mix of earnings and losses by tax jurisdiction, foreign tax rate differentials, and the relative impact of permanent book to tax differences. Each quarter, a cumulative adjustment is recorded for any fluctuations in the estimated annual effective tax rate as compared to the prior quarter. As a result of these factors, and due to potential changes in the Company’s period-to-period results, fluctuations in the Company’s effective tax rate and respective tax provisions or benefits may occur. For the six months ended June 30, 2023, the Company recorded a benefit from income taxes of $513.5 million on a pretax loss of $30.0 million, which resulted in an effective tax rate of 1,708.9%. For the six months ended June 30, 2022, the Company recorded a provision for income taxes of $88.1 million on a pretax loss of $1.105 billion, which resulted in an effective tax rate of (8.0)%. The change in the effective tax rate, as compared to the same period in the prior year, is primarily due to the release of the remaining valuation allowance on the Company's deferred tax asset related to the impairment on its bitcoin holdings, attributable to the increase in market value of bitcoin as of June 30, 2023 compared to December 31, 2022.

As of June 30, 2023, the Company had a valuation allowance of $2.6 million primarily related to certain foreign tax credit carryforwards that, in the Company’s present estimation, more likely than not will not be realized. If the market value of bitcoin declines or the Company is unable to maintain profitability in future periods, the Company may be required to increase the valuation allowance against its deferred tax assets, which could result in a charge that would materially adversely affect net income (loss) in the period in which the charge is incurred. The Company will continue to regularly assess the realizability of deferred tax assets.

The Company records liabilities related to its uncertain tax positions. As of June 30, 2023, the Company had total gross unrecognized tax benefits, including accrued interest, of $6.1 million, all of which was recorded in “Other long-term liabilities” in the Company’s Consolidated Balance Sheet. As of December 31, 2022, the Company had total gross unrecognized tax benefits of $6.1 million, including accrued interest, all of which was recorded in “Other long-term liabilities” in the Company’s Consolidated Balance Sheet.