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Debt - Narrative (Details)		3 Months Ended
Debt - Narrative (Details)	Apr. 05, 2021 $ / shares shares	Mar. 31, 2022 USD ($) employee tradingDay businessDay	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Mar. 25, 2021 USD ($)	Dec. 31, 2020 USD ($)	Oct. 20, 2020 USD ($)	Jul. 23, 2018 USD ($)
Debt Instrument [Line Items]
Inventory		$ 245,487,000		$ 358,221,000
Cash, cash equivalents, restricted cash and restricted cash equivalents		648,727,000	$ 1,343,045,000	718,281,000		$ 945,820,000
Adjustments to additional paid in capital, convertible debt, capped call transaction		$ 62,647,000
Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Conversion price, percentage		98.00%
1.75% Convertible Senior Notes due 2023
Debt Instrument [Line Items]
Aggregated principal amount		$ 23,512,000
0% Convertible Senior Notes due 2025
Debt Instrument [Line Items]
Aggregated principal amount		661,250,000
0.5% Convertible Senior Notes Due 2027
Debt Instrument [Line Items]
Aggregated principal amount		575,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Net assets		413,657,000		567,128,000
Inventory		231,023,000		337,630,000
Cash, cash equivalents, restricted cash and restricted cash equivalents		146,582,000		101,064,000
Amortization of debt issuance costs		92,000	86,000
Interest expense, debt		$ 1,508,000	340,000
Western Alliance Bank \| Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		3.00%
Western Alliance Bank \| Warehouse Agreement Borrowings \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.25%
Texas Capital Bank, N.A. \| Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		2.95%
Decrease in rate of interest accruing on outstanding principal		0.25%
Flagstar Bank, FSB \| Warehouse Agreement Borrowings
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		3.00%
Facility termination period		30 days
Flagstar Bank, FSB \| Warehouse Agreement Borrowings \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		2.00%
Goldman Sachs Bank USA \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, term		6 months
Goldman Sachs Bank USA \| Revolving Credit Facility \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Debt Instrument [Line Items]
Debt instrument, basis points \| employee		11.448
Minimum \| Goldman Sachs Bank USA \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, floor rate of basis spread on variable rate		0.30%
Maximum \| Goldman Sachs Bank USA \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate		3.00%
Senior Notes
Debt Instrument [Line Items]
Amortization of debt issuance costs		$ 1,288,000	789,000
Interest expense, debt		$ 822,000	139,000
Senior Notes \| 1.75% Convertible Senior Notes due 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		1.75%
Amortization of debt issuance costs		$ 38,000	72,000
Interest expense, debt		103,000	104,000
Aggregated principal amount		23,512,000		23,512,000				$ 143,750,000
Repurchased face amount		$ 120,238,000
Threshold trading days \| tradingDay		20
Threshold consecutive trading days \| tradingDay		30
Threshold percentage of stock price trigger		130.00%
Senior Notes \| 0% Convertible Senior Notes due 2025
Debt Instrument [Line Items]
Amortization of debt issuance costs		$ 690,000	690,000
Interest expense, debt		0	0
Aggregated principal amount		$ 661,250,000		661,250,000			$ 661,250,000
Senior Notes \| 0.5% Convertible Senior Notes Due 2027
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage		0.50%
Amortization of debt issuance costs		$ 560,000	27,000
Interest expense, debt		719,000	$ 35,000
Aggregated principal amount		$ 575,000,000		$ 575,000,000	$ 575,000,000
Common stock covered under capped calls (in shares) \| shares	6,147,900
Senior Notes \| Convertible Senior Notes \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Threshold trading days \| tradingDay		20
Threshold consecutive trading days \| tradingDay		30
Threshold percentage of stock price trigger		130.00%
Senior Notes \| Convertible Senior Notes \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Threshold trading days \| businessDay		5
Threshold consecutive trading days \| tradingDay		5
Senior Notes \| Minimum \| 0.5% Convertible Senior Notes Due 2027 \| Call Option \| Capped Call Transaction
Debt Instrument [Line Items]
Capped call price (in dollars per share) \| $ / shares	$ 93.53
Senior Notes \| Maximum \| 0.5% Convertible Senior Notes Due 2027 \| Call Option \| Capped Call Transaction
Debt Instrument [Line Items]
Capped call price (in dollars per share) \| $ / shares	$ 138.56