Financial Instruments - Schedule of Assets, Liabilities, and Equity Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Assets
Derivative Asset, Type [Extensible Enumeration]	Other current assets
Mortgage servicing rights, at fair value	$ 32,171	$ 36,261
Fair Value, Measurements, Recurring
Assets
Cash equivalents	115,276	186,410
Short-term investments	41,952	122,259
Loans held for sale	159,587	199,604
Other current assets	4,600	4,007
Mortgage servicing rights, at fair value	32,171	36,261
Long-term investments	3,149	29,480
Total assets	356,735	578,021
Liabilities
Total liabilities	2,576	2,914
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash equivalents	115,276	186,410
Short-term investments	41,952
Loans held for sale	0	0
Other current assets	0	0
Mortgage servicing rights, at fair value	0	0
Total assets	160,377	338,149
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	159,587	199,604
Other current assets	0	1,669
Mortgage servicing rights, at fair value	0	0
Total assets	159,587	201,273
Liabilities
Total liabilities	2,429	1,873
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	4,600	2,338
Mortgage servicing rights, at fair value	32,171	36,261
Total assets	36,771	38,599
Liabilities
Total liabilities	147	1,041
Fair Value, Measurements, Recurring | Money market funds
Assets
Cash equivalents	115,276	186,410
Fair Value, Measurements, Recurring | Money market funds | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash equivalents	115,276	186,410
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	10,720	96,925
Long-term investments	3,149	29,480
U.S. treasury securities | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Short-term investments	10,720	96,925
Long-term investments	3,149	29,480
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	31,232	25,334
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	31,232	25,334
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
Total short-term investments | Fair Value, Measurements, Recurring
Assets
Short-term investments		122,259
Total short-term investments | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Short-term investments		122,259
Total short-term investments | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets
Short-term investments		0
Total short-term investments | 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
Liabilities
Liabilities	2,429	1,873
Forward sales commitments | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Other current assets		0
Liabilities
Liabilities	0	0
Forward sales commitments | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Assets
Other current assets		1,669
Liabilities
Liabilities	2,429	1,873
Forward sales commitments | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Assets
Other current assets		0
Liabilities
Liabilities	0	0
IRLCs | Fair Value, Measurements, Recurring
Assets
Other current assets	4,600	2,338
Liabilities
Liabilities	147	1,041
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	4,600	2,338
Liabilities
Liabilities	$ 147	$ 1,041