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Intangible Assets (Details) (USD $)
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]    
Gross Amount 2,147,000us-gaap_FiniteLivedIntangibleAssetsGross 6,506,000us-gaap_FiniteLivedIntangibleAssetsGross
Accumulated Amortization 764,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization 3,021,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Net 1,383,000us-gaap_IntangibleAssetsNetExcludingGoodwill 3,485,000us-gaap_IntangibleAssetsNetExcludingGoodwill
Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Life (years) 4 years  
Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Life (years) 20 years  
Acquired Customer Base [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross Amount 877,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_AcquiredCustomerBaseMember
5,146,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_AcquiredCustomerBaseMember
Accumulated Amortization 409,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_AcquiredCustomerBaseMember
2,646,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_AcquiredCustomerBaseMember
Net 468,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_AcquiredCustomerBaseMember
2,500,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_AcquiredCustomerBaseMember
Acquired Customer Base [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Life (years) 5 years 5 years
Acquired Customer Base [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Life (years) 15 years 15 years
Know How [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Life (years) 15 years 15 years
Gross Amount 512,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_KnowHowMember
512,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_KnowHowMember
Accumulated Amortization 213,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_KnowHowMember
179,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_KnowHowMember
Net 299,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_KnowHowMember
333,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_KnowHowMember
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Life (years)   15 years
Gross Amount 339,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
548,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
Accumulated Amortization 0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
76,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
Net 339,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
472,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_TradeNamesMember
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Life (years) 20 years  
Gross Amount 159,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember
 
Accumulated Amortization 0us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember
 
Net 159,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember
 
Biomedical Technologies [Member]    
Finite-Lived Intangible Assets [Line Items]    
Useful Life (years) 5 years 5 years
Gross Amount 260,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_BiomedicalTechnologiesMember
300,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_BiomedicalTechnologiesMember
Accumulated Amortization 142,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_BiomedicalTechnologiesMember
120,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_BiomedicalTechnologiesMember
Net 118,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_BiomedicalTechnologiesMember
180,000us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= dysl_BiomedicalTechnologiesMember