Represents the information pertaining to number of preferred stock purchase right for each common stockholder.

No definition available.

Name:	enzn_NumberOfPreferredStockPurchaseRightForEachCommonStockholder
Namespace Prefix:	enzn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of votes that each preference share is entitled when there are fractional shares.

+ References

No definition available.

+ Details

Name:	enzn_PreferredStockNumberOfVotesForFractionalShare
Namespace Prefix:	enzn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the purchase price per right

+ References

No definition available.

+ Details

Name:	enzn_PurchasePricePerRight
Namespace Prefix:	enzn_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of rights per share of common stock that was distributed as a dividend under the Section 382 Rights Plan.

+ References

No definition available.

+ Details

Name:	enzn_StockholderRightsPlanNumberOfRightsDeclaredAsDividendPerShareOfCommonStock
Namespace Prefix:	enzn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

+ Details

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

- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ 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(28))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_PlanNameAxis=enzn_Section382RightsPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=enzn_Series1JuniorParticipatingPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Section 382 Rights Plan (Details)	Aug. 14, 2020 USD ($) Vote $ / shares shares	Sep. 30, 2020 $ / shares	Dec. 31, 2019 $ / shares
Preferred stock, par value (in dollars per share) \| $ / shares		$ 0.01	$ 0.01
Amount of operating loss carry forward \| $	$ 0
Section 382 Rights Plan
Rights per share distributed as dividend \| shares	1
Number of preferred stock purchase right for each common stockholder \| shares	1
Section 382 Rights Plan \| Series A-1 Junior Participating Preferred Stock
Number of preferred stock eligible for each warrant become exercisable \| shares	1
Preferred stock, par value (in dollars per share) \| $ / shares	$ 0.01
Purchase price per right \| $ / shares	$ 1.20
Number of votes for fractional share \| Vote	1