XML 69 R59.htm IDEA: XBRL DOCUMENT v3.19.2

Technology Development and Licensing Agreements (Details Narrative) - USD ($)		3 Months Ended
	Jan. 18, 2013	Mar. 31, 2013	Jun. 30, 2019
Deferred revenue		$ 5,000,000
Deferred revenue amortization period		10 years
Revenue Ratably Through 2022 [Member]
Upfront payment			$ 5,000,000
Hisun [Member]
Non-refundable research and development fee	$ 5,000,000

X

- Definition

The amortization period for deferred revenue.

+ References

No definition available.

+ Details

Name:	CLSN_DeferredRevenueAmortizationPeriod
Namespace Prefix:	CLSN_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Upfront payment.

+ References

No definition available.

+ Details

Name:	CLSN_UpfrontPayment
Namespace Prefix:	CLSN_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(5))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

X

- Definition

Cash received from licensees for license fees during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585

+ Details

Name:	us-gaap_ProceedsFromLicenseFeesReceived
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_TypeOfArrangementAxis=CLSN_RevenueRatablyThroughTwentyTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis=CLSN_HisunMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: