CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net loss	$ (1,469,797)	$ (535,480)	$ (7,524)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	10,874	11,358	13,332
Reduction in carrying amount of right-of-use assets	8,072	8,189	8,210
Credit losses and sales allowances	939	1,509	2,732
Net realized gain on short-term investments	0	0	(94)
Deferred taxes	131,493	(284,221)	(20,830)
Release of liabilities for unrecognized tax benefits	(360)	(561)	0
Share-based compensation expense	63,619	44,126	11,153
Digital asset impairment losses (gains on sale), net	1,286,286	830,621	70,698
Gain on partial lease termination	0	0	(2,820)
Amortization of issuance costs and debt discount on long-term debt	8,694	7,201	1,543
Changes in operating assets and liabilities:
Accounts receivable	(5,292)	2,618	(774)
Prepaid expenses and other current assets	(6,342)	(25)	2,346
Deposits and other assets	(7,455)	(1,713)	416
Accounts payable and accrued expenses	(3,521)	3,749	9,174
Accrued compensation and employee benefits	(12,344)	2,374	(6,827)
Accrued interest	1,336	1,222	271
Deferred revenue and advance payments	14,839	14,710	(20,223)
Operating lease liabilities	(9,634)	(10,222)	(11,171)
Other long-term liabilities	(8,196)	(1,622)	4,007
Net cash provided by operating activities	3,211	93,833	53,619
Investing activities:
Purchases of digital assets	(287,921)	(2,626,529)	(1,125,000)
Proceeds from sale of digital assets	11,817	0	0
Proceeds from redemption of short-term investments	0	0	119,886
Purchases of property and equipment	(2,486)	(2,706)	(3,651)
Purchases of short-term investments	0	0	(9,928)
Net cash used in investing activities	(278,590)	(2,629,235)	(1,018,693)
Financing activities:
Proceeds from convertible senior notes classified as debt	0	1,050,000	496,473
Proceeds from convertible senior notes classified as equity	0	0	153,527
Proceeds from senior secured notes	0	500,000	0
Proceeds from secured term loan, net of lender fees	204,693	0	0
Issuance costs paid for secured term loan, excluding lender fees	(107)	0	0
Proceeds from other long-term secured debt	11,100	0	0
Issuance costs paid for other long-term secured debt	(270)	0	0
Repayments of other long-term secured debt	(246)	0	0
Proceeds from sale of common stock under public offerings	46,592	1,000,000	0
Issuance costs paid related to sale of common stock under public offerings	(358)	(9,537)	0
Proceeds from exercise of stock options	1,393	40,651	51,082
Payment of withholding tax on vesting of restricted stock units	(2,082)	(4,695)	0
Purchases of treasury stock	0	0	(123,224)
Net cash provided by financing activities	265,188	2,541,685	563,233
Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash	(3,375)	(2,608)	4,784
Net (decrease) increase in cash, cash equivalents, and restricted cash	(13,566)	3,675	(397,057)
Cash, cash equivalents, and restricted cash, beginning of year	64,434	60,759	457,816
Cash, cash equivalents, and restricted cash, end of year	50,868	64,434	60,759
Supplemental disclosure of cash flow information:
Cash paid during the year for interest	43,448	20,416	178
Cash paid during the year for income taxes, net of tax refunds	21,973	7,010	6,803
Employee Stock Purchase Plan
Financing activities:
Proceeds from sales under employee stock purchase plan	4,473	2,854	0
Convertible Senior Notes
Financing activities:
Issuance costs paid	0	(24,796)	(14,625)
Senior Secured Notes
Financing activities:
Issuance costs paid	$ 0	$ (12,792)	$ 0