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Summary of Significant Accounting Policies (Narrative) (Details) $ in Thousands |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jan. 24, 2020 USD ($) | Apr. 23, 2019 | Jan. 31, 2020 | Mar. 31, 2020 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Payments to acquire businesses, gross |  |  |  |  | $ 10,400 | $ 10,400 | $ 83,251 |
Goodwill impairment |  |  |  | $ 20,200 | 0 | 0 | 20,190 |
Escrow deposit |  |  |  |  | 42,900 | 38,400 |  |
Restricted cash |  |  |  |  | 41,449 | 54,477 |  |
Finite-Lived Intangible Assets, Net |  |  |  |  | 66,900 | 78,000 |  |
Intangible assets, accumulated amortization |  |  |  |  | 87,700 | 76,600 |  |
Intangible assets amortization expense |  |  |  |  | 11,118 | 16,502 | 19,685 |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months |  |  |  |  | 10,500 |  |  |
Future Amortization Expense, Year Two |  |  |  |  | 10,000 |  |  |
Future Amortization Expense, Year Three |  |  |  |  | 9,300 |  |  |
Future Amortization Expense, Year Four |  |  |  |  | 8,900 |  |  |
Future Amortization Expense, Year Five |  |  |  |  | 6,500 |  |  |
Property and equipment, net |  |  |  |  | 200,262 | 149,151 |  |
Property and equipment, accumulated depreciation |  |  |  |  | 242,300 | 228,500 |  |
Depreciation Expense |  |  |  |  | 59,800 | 53,500 | 46,400 |
Advertising Expense |  |  |  |  | 61,600 | 47,200 | 40,300 |
Employee benefit plan company contributions |  |  |  |  | 27,600 | 23,400 | 20,400 |
Customer deposits |  |  |  |  | 783,556 | 844,785 |  |
Capitalized contract costs |  |  |  |  | $ 57,300 | $ 44,300 |  |
Number of VIEs requiring consolidation |  |  |  |  | 0 | 0 |  |
Residential mortgage loans available-for-sale |  |  |  |  | $ 677,207 | $ 947,139 |  |
Residential mortgage loans available-for-sale aggregate outstanding principal balance |  |  |  |  | 680,500 | 924,500 |  |
Net gains from the sale of mortgages |  |  |  |  | $ 157,300 | 251,300 | 247,300 |
Days past contractual term once loans no longer accrue interest income |  |  |  |  | 90 days |  |  |
Variability in future cash flows of derivative instruments in days |  |  |  |  | 60 days |  |  |
Stockholders' Equity Attributable to Parent |  |  |  |  | $ (8,914,098) | (7,489,515) | (6,569,989) | $ (5,458,180)
Minimum | Office Furniture and Equipment [Member] |  |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  | 3 years |  |  |
Minimum | Software and Hardware [Member] |  |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  | 3 years |  |  |
Minimum | Model Park Improvements and Furnishings [Member] |  |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  | 1 year |  |  |
Maximum | Office Furniture and Equipment [Member] |  |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  | 10 years |  |  |
Maximum | Software and Hardware [Member] |  |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  | 5 years |  |  |
Maximum | Model Park Improvements and Furnishings [Member] |  |  |  |  |  |  |  |
Property and equipment, useful life |  |  |  |  | 5 years |  |  |
Financial Services |  |  |  |  |  |  |  |
Interest income on mortgage loans |  |  |  |  | $ 14,200 | 10,000 | 9,200 |
IRLCs |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  | 653,200 | 337,900 |  |
Forward contracts |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  | 1,000,000 | 903,000 |  |
Whole loan commitments |  |  |  |  |  |  |  |
Derivative, Notional Amount |  |  |  |  | 285,900 | 310,000 |  |
American West Homes [Member] [Member] | Trade Names [Member] |  |  |  |  |  |  |  |
Weighted average useful life (in years) |  | 20 years |  |  |  |  |  |
Innovative Construction Group [Member] |  |  |  |  |  |  |  |
Business combination, consideration transferred | $ 104,000 |  |  |  |  |  |  |
Payments to acquire businesses, gross | 83,300 |  |  |  | $ 10,400 | 10,400 |  |
Goodwill | 48,700 |  |  |  |  |  |  |
Innovative Construction Group [Member] | Trade Names [Member] |  |  |  |  |  |  |  |
Finite-lived intangible assets acquired | $ 1,800 |  |  |  |  |  |  |
Weighted average useful life (in years) | 5 years |  |  |  |  |  |  |
Innovative Construction Group [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |
Finite-lived intangible assets acquired | $ 27,800 |  |  |  |  |  |  |
Weighted average useful life (in years) | 7 years |  | 7 years |  |  |  |  |
JW Homes (Wieland) [Member] |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  | 68,900 |  |
Restricted stock [Member] |  |  |  |  |  |  |  |
Share-based compensation vesting period |  |  |  |  | 3 years |  |  |
Retained Earnings |  |  |  |  |  |  |  |
Stockholders' Equity Attributable to Parent |  |  |  |  | $ (5,581,702) | (4,196,276) | $ (3,306,057) | (2,220,574)
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |  |  |
Insurance Receivables, Contract Assets, and Vendor Rebate Receivables recognized |  |  |  |  | $ 222,900 | $ 208,400 |  |
Accounting Standards Update 2016-13 | Retained Earnings | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |  |  |  |
Stockholders' Equity Attributable to Parent |  |  |  |  |  |  |  | $ 735

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6578-128477 + Details
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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 440 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=123605502&loc=d3e21310-158488 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=123605502&loc=d3e21286-158488 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=123605549&loc=d3e21493-158490 + Details
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