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WARRANTY LIABILITY (Tables)
 12 Months Ended
Sep. 30, 2014
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability
Changes in Griffon’s warranty liability, included in Accrued liabilities, were as follows:
 
Years Ended September 30,
 
2014
 
2013
Balance, beginning of period
$
6,649

 
$
8,856

Warranties issued and changes in estimated pre-existing warranties
2,379

 
2,331

Actual warranty costs incurred
(4,094
)
 
(4,538
)
Balance, end of period
$
4,934

 
$
6,649