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Debt (Details) (USD $)
Sep. 30, 2014
Sep. 30, 2013
Debt [Line Items]    
Total Debt $ 7,044,000us-gaap_NotesPayable $ 9,819,000us-gaap_NotesPayable
Less current portion (2,329,000)us-gaap_NotesPayableCurrent (9,819,000)us-gaap_NotesPayableCurrent
Less convertible notes (1,433,000)us-gaap_ConvertibleLongTermNotesPayable 0us-gaap_ConvertibleLongTermNotesPayable
Long term portion 3,282,000us-gaap_LongTermNotesPayable 0us-gaap_LongTermNotesPayable
Middlesex Savings Bank [Member]    
Debt [Line Items]    
Total Debt 2,122,000us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_MiddlesexSavingsBankMember
0us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_MiddlesexSavingsBankMember
Ayer Industrial Development Finance Authority [Member]    
Debt [Line Items]    
Total Debt 191,000us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_AyerIndustrialDevelopmentFinanceAuthorityMember
0us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_AyerIndustrialDevelopmentFinanceAuthorityMember
Massachusetts Development Finance Agency [Member]    
Debt [Line Items]    
Total Debt 298,000us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_MassachusettsDevelopmentFinanceAgencyMember
0us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_MassachusettsDevelopmentFinanceAgencyMember
Convertible Notes Payable [Member]    
Debt [Line Items]    
Total Debt 1,433,000us-gaap_NotesPayable
/ dei_LegalEntityAxis
= us-gaap_ConvertibleNotesPayableMember
0us-gaap_NotesPayable
/ dei_LegalEntityAxis
= us-gaap_ConvertibleNotesPayableMember
Bank One [Member]    
Debt [Line Items]    
Total Debt 0us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_BankOneMember
4,929,000us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_BankOneMember
Bank Two [Member]    
Debt [Line Items]    
Total Debt 0us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_BankTwoMember
1,890,000us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_BankTwoMember
Masschusetts Capital Resource Corporation [Member]    
Debt [Line Items]    
Total Debt $ 3,000,000us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_MasschusettsCapitalResourceCorporationMember
$ 3,000,000us-gaap_NotesPayable
/ dei_LegalEntityAxis
= dysl_MasschusettsCapitalResourceCorporationMember