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v2.3.0.11

Subsequent Events (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 0 Months Ended
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Aug. 12, 2011
Subsequent Events |
Stock Repurchase Agreement, number of shares agreed to be repurchased | 1,000,000
Stock Repurchase Agreement, price per share | $ 20
Stock Repurchase Agreement aggregate purchase price | $ 20,000
Percentage of issued and outstanding common stock prior to the repurchase | 1.80%

X
- Definition Percentage of issued and outstanding common stock prior to the repurchase + Details
Name: | tho_PercentageOfIssuedAndOutstandingCommonStockPriorToRepurchase
Namespace Prefix: | tho
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock Repurchase Program Price Of Per Shares Authorized To Be Repurchased + Details
Name: | tho_StockRepurchaseProgramPriceOfPerSharesAuthorizedToBeRepurchased
Namespace Prefix: | tho
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount authorized by an entity's Board of Directors under a stock repurchase plan. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount
Namespace Prefix: | us-gaap
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + Details
Name: | us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix: | us-gaap
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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