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Acquisitions and Divestitures (Details Textual) (USD $)
3 Months Ended 12 Months Ended 1 Months Ended 0 Months Ended
Dec. 31, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Dec. 23, 2013
Nov. 07, 2013
Jun. 26, 2014
Business Acquisition [Line Items]              
Payments to Acquire Businesses, Gross   $ 500,000us-gaap_PaymentsToAcquireBusinessesGross $ 0us-gaap_PaymentsToAcquireBusinessesGross        
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned             1,700,000us-gaap_BusinessAcquisitionEquityInterestIssuedOrIssuableValueAssigned
Revenue, Net, Total   42,309,000us-gaap_SalesRevenueNet 42,753,000us-gaap_SalesRevenueNet        
Gain (Loss) on Disposition of Business 1,300,000us-gaap_GainLossOnSaleOfBusiness            
Disposal Group, Including Discontinued Operation, Assets, Noncurrent     2,900,000us-gaap_DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent        
Customer Deposits, Noncurrent     100,000us-gaap_CustomerDepositsNoncurrent        
Dichrotec [Member]              
Business Acquisition [Line Items]              
Payments to Acquire Businesses, Gross   500,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_DichrotecMember
         
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares   700,000us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_DichrotecMember
         
Machinery and Equipment, Gross             1,600,000us-gaap_MachineryAndEquipmentGross
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_DichrotecMember
Inventory, Gross             100,000us-gaap_InventoryGross
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_DichrotecMember
Revenue, Net, Total       1,900,000us-gaap_SalesRevenueNet
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_DichrotecMember
     
Dilon [Member]              
Business Acquisition [Line Items]              
Proceeds from Sales of Business, Affiliate and Productive Assets         3,500,000us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_DilonMember
   
Escrow Deposit         250,000us-gaap_EscrowDeposit
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_DilonMember
   
Proceeds from (Repayments of) Debt         2,800,000us-gaap_ProceedsFromRepaymentsOfDebt
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_DilonMember
   
Protec [Member]              
Business Acquisition [Line Items]              
Proceeds from Sales of Business, Affiliate and Productive Assets           1,200,000us-gaap_ProceedsFromSalesOfBusinessAffiliateAndProductiveAssets
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_ProtecMember
 
Repayment Of Accounts Receivable           500,000dysl_RepaymentOfAccountsReceivable
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_ProtecMember
 
Repayments of Other Debt           $ 1,200,000us-gaap_RepaymentsOfOtherDebt
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= dysl_ProtecMember