Financial Instruments - Schedule of Assets, Liabilities, and Equity Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Assets
Mortgage servicing rights, at fair value	$ 36,261	$ 0
Derivative Asset, Type [Extensible Enumeration]		Other current assets, Prepaid expenses
Fair Value, Measurements, Recurring
Assets
Cash equivalents	186,410	$ 509,971
Short-term investments	122,259	33,737
Loans held for sale	199,604	35,759
Other current assets	4,007	1,329
Mortgage servicing rights, at fair value	36,261
Long-term investments	29,480	54,828
Total assets	578,021	635,624
Liabilities
Total liabilities	2,914	153
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash equivalents	186,410	509,971
Short-term investments	122,259
Loans held for sale	0	0
Other current assets	0	0
Mortgage servicing rights, at fair value	0
Total assets	338,149	598,536
Liabilities
Total liabilities	0	0
Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents	0	0
Short-term investments	0
Loans held for sale	199,604	35,759
Other current assets	1,669	138
Mortgage servicing rights, at fair value	0
Total assets	201,273	35,897
Liabilities
Total liabilities	1,873	93
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets
Cash equivalents	0	0
Short-term investments	0
Loans held for sale	0	0
Other current assets	2,338	1,191
Mortgage servicing rights, at fair value	36,261
Total assets	38,599	1,191
Liabilities
Total liabilities	1,041	60
Fair Value, Measurements, Recurring \| Money market funds
Assets
Cash equivalents	186,410	509,971
Fair Value, Measurements, Recurring \| Money market funds \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash equivalents	186,410	509,971
Fair Value, Measurements, Recurring \| Money market funds \| Significant Other Observable Inputs (Level 2)
Assets
Cash equivalents	0	0
Fair Value, Measurements, Recurring \| Money market funds \| Significant Unobservable Inputs (Level 3)
Assets
Cash equivalents	0	0
U.S. treasury securities \| Fair Value, Measurements, Recurring
Assets
Short-term investments	96,925	16,718
Long-term investments	29,480	54,828
U.S. treasury securities \| Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Short-term investments	96,925	16,718
Long-term investments	29,480	54,828
U.S. treasury securities \| Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Assets
Short-term investments	0	0
Long-term investments	0	0
U.S. treasury securities \| Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets
Short-term investments	0	0
Long-term investments	0	0
Agency bonds \| Fair Value, Measurements, Recurring
Assets
Short-term investments	25,334	11,906
Long-term investments	0	0
Agency bonds \| Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Short-term investments	25,334	11,906
Agency bonds \| Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Assets
Short-term investments	0	0
Agency bonds \| Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets
Short-term investments	0	0
Equity securities
Assets
Short-term investments		5,113
Equity securities \| Fair Value, Measurements, Recurring
Assets
Short-term investments		5,113
Long-term investments		0
Equity securities \| Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Short-term investments		5,113
Equity securities \| Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Assets
Short-term investments		0
Equity securities \| Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets
Short-term investments		0
Forward sales commitments \| Fair Value, Measurements, Recurring
Assets
Other current assets	1,669	138
Liabilities
Liabilities	1,873	93
Forward sales commitments \| Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Other current assets	0	0
Liabilities
Liabilities	0	0
Forward sales commitments \| Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Assets
Other current assets	1,669	138
Liabilities
Liabilities	1,873	93
Forward sales commitments \| Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets
Other current assets	0	0
Liabilities
Liabilities	0	0
IRLCs \| Fair Value, Measurements, Recurring
Assets
Other current assets	2,338	1,191
Liabilities
Liabilities	1,041	60
IRLCs \| Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Other current assets	0	0
Liabilities
Liabilities	0	0
IRLCs \| Fair Value, Measurements, Recurring \| Significant Other Observable Inputs (Level 2)
Assets
Other current assets	0	0
Liabilities
Liabilities	0	0
IRLCs \| Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3)
Assets
Other current assets	2,338	1,191
Liabilities
Liabilities	$ 1,041	$ 60

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