XML 34 R56.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Losses Due to Repurchases Related to Repurchase Agreements (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Oct. 31, 2014 | Oct. 31, 2013
Loss Contingencies [Line Items] |  |
Cost of units repurchased | $ 1,645 | $ 123
Realization of units resold | 1,440 | 101
Losses due to repurchase | $ 205 | $ 22

X
- Definition Cost of units repurchased + References No definition available. + Details
Name: | tho_CostOfUnitsRepurchased
Namespace Prefix: | tho_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Losses Due To Repurchase. + References No definition available. + Details
Name: | tho_LossesDueToRepurchase
Namespace Prefix: | tho_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Realization of units resold + References No definition available. + Details
Name: | tho_RealizationOfUnitsResold
Namespace Prefix: | tho_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration