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Stockholders' Equity (Details) (USD $)
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Balance,Options Outstanding 630,532us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 794,483us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber  
Outstanding and exercisable,Options Outstanding 630,532us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber 794,483us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber  
Granted,Options Outstanding 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross 0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross  
Exercised,Options Outstanding 0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised 0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised  
Cancelled, Options Outstanding (200,000)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod (163,951)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod  
Balance,Options Outstanding 430,532us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 630,532us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber 794,483us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Outstanding and exercisable,Options Outstanding 430,532us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber 630,532us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber 794,483us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
Balance,Weighted Average Exercise Price per Share $ 3.33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice $ 3.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice  
Outstanding and exercisable,Weighted Average Exercise Price per Share $ 3.33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice $ 3.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice  
Granted,Weighted Average Exercise Price per Share $ 0us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice $ 0us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice  
Exercised,Weighted Average Exercise Price per Share $ 0us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice $ 0us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice  
Cancelled,Weighted Average Exercise Price per Share $ 2.00us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice $ 3.39us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice  
Balance,Weighted Average Exercise Price per Share $ 3.33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice $ 3.33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice $ 3.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Outstanding and exercisable,Weighted Average Exercise Price per Share $ 3.33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice $ 3.33us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice $ 3.34us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
Balance,Weighted Average Remain Contractual Term (in Years) 3 months 22 days 1 year 22 days 1 year 9 months
Outstanding and exercisable,Weighted Average Remain Contractual Term (in Years) 3 months 22 days 1 year 22 days 1 year 9 months
Option One [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Balance,Options Outstanding 115,730us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionOneMember
   
Outstanding and exercisable,Options Outstanding 115,730us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionOneMember
   
Balance,Weighted Average Exercise Price per Share $ 3.16us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionOneMember
   
Outstanding and exercisable,Weighted Average Exercise Price per Share $ 3.16us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionOneMember
   
Balance,Weighted Average Remain Contractual Term (in Years) 8 months 26 days    
Option Two [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Balance,Options Outstanding 275,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionTwoMember
   
Outstanding and exercisable,Options Outstanding 275,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionTwoMember
   
Balance,Weighted Average Exercise Price per Share $ 4.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionTwoMember
   
Outstanding and exercisable,Weighted Average Exercise Price per Share $ 4.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionTwoMember
   
Balance,Weighted Average Remain Contractual Term (in Years) 3 months 11 days    
Option Three [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Balance,Options Outstanding 29,528us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionThreeMember
   
Outstanding and exercisable,Options Outstanding 29,528us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionThreeMember
   
Balance,Weighted Average Exercise Price per Share $ 5.53us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionThreeMember
   
Outstanding and exercisable,Weighted Average Exercise Price per Share $ 5.53us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionThreeMember
   
Balance,Weighted Average Remain Contractual Term (in Years) 3 months 11 days    
Option Four [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Balance,Options Outstanding 10,274us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionFourMember
   
Outstanding and exercisable,Options Outstanding 10,274us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionFourMember
   
Balance,Weighted Average Exercise Price per Share $ 6.65us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionFourMember
   
Outstanding and exercisable,Weighted Average Exercise Price per Share $ 6.65us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionFourMember
   
Balance,Weighted Average Remain Contractual Term (in Years) 5 months 1 day    
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 6.65us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Maximum [Member] | Option One [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 3.99us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionOneMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Maximum [Member] | Option Two [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 4.99us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionTwoMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Maximum [Member] | Option Three [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 5.99us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionThreeMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Maximum [Member] | Option Four [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 6.65us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionFourMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 3.03us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Minimum [Member] | Option One [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 3.03us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionOneMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Minimum [Member] | Option Two [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 4.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionTwoMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Minimum [Member] | Option Three [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 5.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionThreeMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Minimum [Member] | Option Four [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Range of Exercise Prices $ 6.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExercisePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= dysl_OptionFourMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember