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Note 16 - Transactions with Related Parties (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended | 48 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 45 Months Ended |  | 12 Months Ended
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Oct. 31, 2008 Phase One [Member] Hirair Hovnanian [Member] | Oct. 31, 2011 Phase One [Member] Hirair Hovnanian [Member] | Oct. 31, 2010 Phase Two [Member] Hirair Hovnanian [Member] | Oct. 31, 2010 Phase Three [Member] Hirair Hovnanian [Member] | Oct. 31, 2011 Phase Four [Member] Hirair Hovnanian [Member] | Dec. 31, 2005 Hirair Hovnanian [Member] | Oct. 31, 2003 Hirair Hovnanian [Member] | Oct. 31, 2011 Hirair Hovnanian [Member] | Oct. 31, 2012 Hirair Hovnanian [Member] | Oct. 31, 2012 Tavit Najarian [Member] | Oct. 31, 2011 Tavit Najarian [Member] | Oct. 31, 2010 Tavit Najarian [Member] | Oct. 31, 2012 Mazin Kalian [Member] | Oct. 31, 2011 Mazin Kalian [Member]
Related Party Transaction, Agreement with Related Party |  |  |  |  |  | $ 25.0 | $ 31.4 |  |  |  |  |  |  |
Related Party Transaction, Option Deposit with Related Party |  |  |  |  |  |  |  |  | 3.0 |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  |  |  |  |  | $ 29.2 |  | $ 0.9 | $ 1.0 | $ 1.3 | $ 0.1 | $ 0.2
Related Party Transaction, Number of Phases |  |  |  |  |  | 4 |  |  |  |  |  |  |  |
Related Party Transaction, Duration |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |
Number of Real Estate Properties Purchased from Related Parties | 43 | 86 | 83 | 84 | 137 |  |  |  |  |  |  |  |  |

X
- Definition Number of building lots purchased from a related party during the period. + References No definition available. + Details
Name: | hov_NumberOfRealEstatePropertiesPurchasedFromRelatedParties
Namespace Prefix: | hov_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Agreed upon purchase price of land to be acquired from a related party. + References No definition available. + Details
Name: | hov_RelatedPartyTransactionAgreementWithRelatedParty
Namespace Prefix: | hov_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Maximum number of years that a parcel of land is to be acquired from a related party, split into four phases. + References No definition available. + Details
Name: | hov_RelatedPartyTransactionDuration
Namespace Prefix: | hov_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of phases that a parcel of land is to be acquired from a related party. + References No definition available. + Details
Name: | hov_RelatedPartyTransactionNumberOfPhases
Namespace Prefix: | hov_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Deposit amount paid to a related party for the option to aquire land at a future date from that related party. + References No definition available. + Details
Name: | hov_RelatedPartyTransactionOptionDepositWithRelatedParty
Namespace Prefix: | hov_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of transactions with related party during the financial reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 2 -Subparagraph c -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
Name: | us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration