WARRANTY LIABILITY (Tables)
 6 Months Ended
Mar. 31, 2015
Product Warranties Disclosures [Abstract]  
Schedule of Product Warranty Liability
Changes in Griffon’s warranty liability, included in Accrued liabilities, were as follows:
 
Three Months Ended March 31,
 
Six Months Ended March 31,
 
2015
 
2014
 
2015
 
2014
Balance, beginning of period
$
4,908

 
$
6,929

 
$
4,934

 
$
6,649

Warranties issued and changes in estimated pre-existing warranties
1,842

 
1,135

 
2,791

 
2,101

Actual warranty costs incurred
(1,076
)
 
(953
)
 
(2,051
)
 
(1,639
)
Balance, end of period
$
5,674

 
$
7,111

 
$
5,674

 
$
7,111