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Company - Additional Information (Detail)
In Thousands, except Share data, unless otherwise specified
1 Months Ended
Feb. 22, 2013
USD ($)
Feb. 22, 2013
EUR (€)
Aug. 02, 2013
W.E.T. Bank of America credit facility
Subsequent Event
USD ($)
Aug. 02, 2013
W.E.T. Bank of America credit facility
Subsequent Event
EUR (€)
Jun. 30, 2013
W.E.T. Bank of America credit facility
Subsequent Event
Minimum
Feb. 22, 2013
WET
Historical Gentherm
Aug. 02, 2013
WET
Subsequent Event
Historical Gentherm
Nature Of Company [Line Items]              
Business Acquisition, shares acquired           442,253 309,460
Business Acquisition, percentage of shares acquired           14.00%  
Business Acquisition, shares issued for acquisition 3,300,000 3,300,000          
Business Acquisition, cash paid $ 7,247 € 5,408 $ 35,247 € 26,304      
Business Acquisition, percentage of shares acquired         99.00%    
Business Acquisition, purchase price per share       € 85      
Business Acquisition cost of acquisition, financed by borrowings     $ 40,441