XML 52 R45.htm IDEA: XBRL DOCUMENT v2.4.1.9
ACQUISITIONS (Details) - Summary of Goodwill and Intangible Asset Classifications (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Mar. 31, 2015
Sep. 30, 2014
May 21, 2014
Mar. 31, 2014
Business Acquisition [Line Items]        
Goodwill 358,695us-gaap_Goodwill $ 371,846us-gaap_Goodwill    
Customer relationships [Member]        
Business Acquisition [Line Items]        
Amortization Period (Years) 25 years      
Recent Acquirees [Member]        
Business Acquisition [Line Items]        
Goodwill 22,576us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= gff_RecentAcquireesMember
     
Total Goodwill and Intangibles 46,951gff_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedGoodwillAndIntangibles
/ us-gaap_BusinessAcquisitionAxis
= gff_RecentAcquireesMember
     
Recent Acquirees [Member] | Customer relationships [Member]        
Business Acquisition [Line Items]        
Amortizable intangible assets 17,706us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= gff_RecentAcquireesMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
     
Recent Acquirees [Member] | Tradenames [Member]        
Business Acquisition [Line Items]        
Indefinite life intangible assets 6,669us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= gff_RecentAcquireesMember
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
     
Cyclone [Member]        
Business Acquisition [Line Items]        
Goodwill     11,322us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= gff_CycloneMember
 
Indefinite life intangible assets     3,548us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= gff_CycloneMember
 
Amortizable intangible assets     11,608us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= gff_CycloneMember
 
Total Goodwill and Intangibles     26,478gff_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedGoodwillAndIntangibles
/ us-gaap_BusinessAcquisitionAxis
= gff_CycloneMember
 
Cyclone [Member] | Customer relationships [Member]        
Business Acquisition [Line Items]        
Amortizable intangible assets     11,608us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= gff_CycloneMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
 
Cyclone [Member] | Tradenames [Member]        
Business Acquisition [Line Items]        
Indefinite life intangible assets     3,548us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= gff_CycloneMember
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
 
Northcote [Member]        
Business Acquisition [Line Items]        
Goodwill       11,254us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= gff_NorthcotePotteryMember
Indefinite life intangible assets       3,121us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= gff_NorthcotePotteryMember
Amortizable intangible assets       6,098us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= gff_NorthcotePotteryMember
Total Goodwill and Intangibles       20,473gff_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedGoodwillAndIntangibles
/ us-gaap_BusinessAcquisitionAxis
= gff_NorthcotePotteryMember
Northcote [Member] | Customer relationships [Member]        
Business Acquisition [Line Items]        
Amortizable intangible assets       6,098us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
/ us-gaap_BusinessAcquisitionAxis
= gff_NorthcotePotteryMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
Northcote [Member] | Tradenames [Member]        
Business Acquisition [Line Items]        
Indefinite life intangible assets       $ 3,121us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
/ us-gaap_BusinessAcquisitionAxis
= gff_NorthcotePotteryMember
/ us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember