CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net income (loss)	$ 429,121	$ (1,469,797)	$ (535,480)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	14,527	10,874	11,358
Reduction in carrying amount of right-of-use assets	8,643	8,072	8,189
Credit losses and sales allowances	1,387	939	1,509
Deferred taxes	(568,949)	131,493	(284,221)
Release of liabilities for unrecognized tax benefits	(506)	(360)	(561)
Share-based compensation expense	69,571	63,619	44,126
Digital asset impairment losses (gains on sale), net	115,851	1,286,286	830,621
Amortization of issuance costs on long-term debt	8,808	8,694	7,201
Gain on debt extinguishment	(44,686)	0	0
Changes in operating assets and liabilities:
Accounts receivable	10,307	(5,292)	2,618
Prepaid expenses and other current assets	(11,358)	(6,342)	(25)
Deposits and other assets	(632)	(7,455)	(1,713)
Accounts payable and accrued expenses	(634)	(3,521)	3,749
Accrued compensation and employee benefits	(12,000)	(12,344)	2,374
Accrued interest	(1,336)	1,336	1,222
Deferred revenue and advance payments	2,362	14,839	14,710
Operating lease liabilities	(10,218)	(9,634)	(10,222)
Other long-term liabilities	2,454	(8,196)	(1,622)
Net cash provided by operating activities	12,712	3,211	93,833
Investing activities:
Purchases of digital assets	(1,902,299)	(287,921)	(2,626,529)
Proceeds from sale of digital assets	0	11,817	0
Purchases of property and equipment	(2,938)	(2,486)	(2,706)
Net cash used in investing activities	(1,905,237)	(278,590)	(2,629,235)
Financing activities:
Proceeds from convertible senior notes	0	0	1,050,000
Proceeds from senior secured notes	0	0	500,000
Proceeds from secured term loan, net of lender fees	0	204,693	0
Issuance costs paid for secured term loan, excluding lender fees	0	(107)	0
Repayments of secured term loan and third-party extinguishment costs	(160,033)	0	0
Proceeds from other long-term secured debt	0	11,100	0
Issuance costs paid for other long-term secured debt	0	(270)	0
Repayments of other long-term secured debt	(513)	(246)	0
Proceeds from sale of common stock under public offerings	2,029,214	46,592	1,000,000
Issuance costs paid related to sale of common stock under public offerings	(9,141)	(358)	(9,537)
Proceeds from exercise of stock options	30,518	1,393	40,651
Payment of withholding tax on vesting of restricted stock units	(4,114)	(2,082)	(4,695)
Net cash provided by financing activities	1,889,886	265,188	2,541,685
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash	444	(3,375)	(2,608)
Net (decrease) increase in cash, cash equivalents, and restricted cash	(2,195)	(13,566)	3,675
Cash, cash equivalents, and restricted cash, beginning of year	50,868	64,434	60,759
Cash, cash equivalents, and restricted cash, end of year	48,673	50,868	64,434
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	41,229	43,448	20,416
Cash paid during the year for income taxes, net of tax refunds	30,318	21,973	7,010
Employee Stock Purchase Plan
Financing activities:
Proceeds from sales under employee stock purchase plan	3,955	4,473	2,854
Convertible Senior Notes
Financing activities:
Issuance costs paid	0	0	(24,796)
Senior Secured Notes
Financing activities:
Issuance costs paid	$ 0	$ 0	$ (12,792)