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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Significant Accounting Policies [Line Items] |  |  |
Cash related to a consolidated variable interest entity | $ 906 | $ 462 |
Pre-tax charges related to impairment of contract land deposits |  | 11,200 | 4,300
Pre-tax recovery related to impairment of contract land deposits | 2,000 |  |
Contract land deposit asset impairment valuation allowance | 65,000 | 70,300 |
Impairment of excess reorganization value | 0 |  |
Goodwill acquired from business acquisition | 441 |  |
Finite-lived intangibles acquired from business acquisition | 8,778 |  |
Weighted average life of finite-lived intangible assets | 6 years |  |
Antidilutive stock options and restricted share units | 194,416 | 467,367 | 443,565
Uncertain tax position threshold for tax benefit | 50.00% |  |
Mortgage Banking [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Restricted Cash | 2,089 | 1,373 |
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Typical length of days loans sold into secondary market | 30 days |  |
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Rate lock commitments [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Notional or Principal Amount | 138,865 |  |
Mortgage Banking [Member] | Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Forward sales contracts [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Notional or Principal Amount | 305,322 |  |
Homebuilding [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Restricted Cash | 19,661 | 19,119 |
Goodwill acquired from business acquisition | 441 |  |
Finite-lived intangibles acquired from business acquisition | $ 8,778 |  |
Model home furniture and fixtures [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 2 years |  |
Office facilities and other [Member] | Minimum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |
Office facilities and other [Member] | Maximum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 10 years |  |
Manufacturing facilities [Member] | Minimum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |
Manufacturing facilities [Member] | Maximum [Member] |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 40 years |  |

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -Clause 1 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph l -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 34 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 43 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 72 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-BRD -Paragraph 80 -Subparagraph Exhibit 4-8, 3 -IssueDate 2006-05-01 -Chapter 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 + Details
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