Subsequent Event - Additional Information (Detail) - AHFCU [Member] - Subsequent Event [Member] $ in Millions	May 09, 2024 USD ($) Location
Subsequent Event [Line Items]
Purchase and assumption agreement date	May 09, 2024
Loans acquired	$ 123.0
Number of branch locations \| Location	3
Deposits Assumed	$ 105.0
Percentage of deposits assumed at closing	7.00%

Business acquisition, percentage of deposits assumed at closing.

No definition available.

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Namespace Prefix:	lnkb_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Business combination, recognized identifiable assets acquired and liabilities assumed, financing receivable.

+ References

No definition available.

+ Details

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Namespace Prefix:	lnkb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Business combination, recognized identifiable assets acquired and liabilities assumed, liabilities, deposits.

+ References

No definition available.

+ Details

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Namespace Prefix:	lnkb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of branch locations.

+ References

No definition available.

+ Details

Name:	lnkb_NumberOfBranchLocations
Namespace Prefix:	lnkb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the business acquisition agreement was executed, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

+ Details

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Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionAxis=lnkb_AmericanHeritageFederalCreditUnionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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