v3.19.2

Recent Accounting Pronouncements - Contract Assets and Contract Liabilities (Details) - USD ($)	Jun. 30, 2019	Sep. 30, 2018
Unbilled receivables	$ 2,422,000	$ 1,214,000
Contract assets	62,000	1,000
Security and other deposits	53,000	58,000
Long term contract assets	7,000	7,000
Deferred revenue		0
Contract liabilities	$ 33,000	253,000
Previously Reported [Member]
Unbilled receivables		1,215,000
Contract assets		0
Security and other deposits		65,000
Long term contract assets		0
Deferred revenue		253,000
Contract liabilities		$ 0

Represents the carrying amount of current contract assets.

+ References

No definition available.

+ Details

Name:	dysl_ContractAssetsCurrent
Namespace Prefix:	dysl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount represents the value of long term contract assets.

+ References

No definition available.

+ Details

Name:	dysl_ContractAssetsNonCurrent
Namespace Prefix:	dysl_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the carrying amount of current contract liabilities.

+ References

No definition available.

+ Details

Name:	dysl_ContractLiabilitiesCurrent
Namespace Prefix:	dysl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 8
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765

+ Details

Name:	us-gaap_DeferredRevenueCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DepositsAssetsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

+ References

No definition available.

+ Details

Name:	us-gaap_UnbilledReceivablesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	srt_RestatementAxis=srt_ScenarioPreviouslyReportedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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