Subsequent Events - Additional Information (Details) - Subsequent Events - La Jolla - AcelRx	1 Months Ended
Jan. 31, 2022 USD ($)
Subsequent Event [Line Items]
Non-controlling equity interest, ownership percentage	15.00%
Investment measured at contributed cost	$ 0
Business acquisition, common stock issued value	1,400,000
Contingent value rights to be paid upon the achievement of certain regulatory and sales-based milestones	3,900,000
Contingent value rights to be paid upon satisfaction of certain obligations	$ 200,000

Contingent value rights to be paid upon the achievement of certain regulatory and sales-based milestones.

No definition available.

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Namespace Prefix:	ljpc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Contingent value rights to be paid upon satisfaction of certain obligations.

+ References

No definition available.

+ Details

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Namespace Prefix:	ljpc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Investment measured at contributed cost.

+ References

No definition available.

+ Details

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Namespace Prefix:	ljpc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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