Allowances for Loan Losses - Additional Information (Detail) $ in Thousands	10 Months Ended	12 Months Ended
Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) Loans	Jun. 30, 2022 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Purchased loans acquired with deteriorated credit quality		$ 5,556	$ 5,567
Unpaid principal balance	$ 339	840	8,441
Total Loans	236,840	715,039	790,181
Federal Home Loan Bank (FHLB) [Member]
Loans and Leases Receivable Disclosure [Line Items]
Borrowings secured by loans pledged to FHLB	1,120	0
Real Estate Commercial Loans And Construction And Development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total Loans		$ 338,749	435,588
Additional loans and leases receivable carrying amount			$ 165,203
Loan portfolio percentage		47.40%	55.10%
Commercial Real Estate Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Purchased loans acquired with deteriorated credit quality		$ 4,394	$ 4,369
Unpaid principal balance	0	0	2,501
Established credit risk related non-accretable discount		2,716
Total Loans	$ 27,261	338,749	435,588
Purchased Credit Impaired Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Purchased loans acquired with deteriorated credit quality		5,556	5,249
Unpaid principal balance		6,627	6,627
Estimated fair value of loans		5,384	5,384
Contractual principal and interest at merger		8,509	8,509
Preliminary estimate of expected cash flows		5,793	5,793
Established credit risk related non-accretable discount			2,716
Accretable discount		409	409
Remaining unamortized accretable discount		307
Purchased Credit Impaired Loans [Member] \| Federal Home Loan Bank (FHLB) [Member]
Loans and Leases Receivable Disclosure [Line Items]
Borrowings secured by loans pledged to FHLB		1,120	$ 0
Purchased Credit Impaired Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Purchased loans acquired with deteriorated credit quality		$ 5,527
Covid -19 [Member] \| Small Business Administration (SBA) [Member]
Loans and Leases Receivable Disclosure [Line Items]
Maximum overdue period for a loan modification not to be classfied as troubled debt restructuring		30 days
Maximum period within which the loan must have been executed from the date of declaration of national emergency	60 days
Number of loans deferred \| Loans		0
Owner Occupied [Member] \| Commercial Real Estate Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Mortgage loans on real estate		$ 109,226

Additional Loans And Leases Receivable Carrying Amount

No definition available.

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

- Definition

Business combination acquired receivable accretable yield.

+ References

No definition available.

+ Details

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

- Definition

Business combination acquired receivable expected cash fLows.

+ References

No definition available.

+ Details

Name:	lnkb_BusinessCombinationAcquiredReceivableExpectedCashFlows
Namespace Prefix:	lnkb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Business combination acquired receivables nonaccretable difference.

+ References

No definition available.

+ Details

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

- Definition

Business combination remaining unamortized accretable discount.

+ References

No definition available.

+ Details

Name:	lnkb_BusinessCombinationRemainingUnamortizedAccretableDiscount
Namespace Prefix:	lnkb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivable loans acquired with deteriorated credit quality.

+ References

No definition available.

+ Details

Name:	lnkb_FinancingReceivableLoansAcquiredWithDeterioratedCreditQuality
Namespace Prefix:	lnkb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Loan portfolio percentage.

+ References

No definition available.

+ Details

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

- Definition

Maximum overdue period for loan modification not to be classified troubled debt restructuring.

+ References

No definition available.

+ Details

Name:	lnkb_MaximumOverduePeriodForLoanModificationNotToBeClassifiedTroubledDebtRestructuring
Namespace Prefix:	lnkb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum period within which the loan must have been executed from the date of declaration of national emergency.

+ References

No definition available.

+ Details

Name:	lnkb_MaximumPeriodWithinWhichTheLoanMustHaveBeenExecutedFromTheDateOfDeclarationOfNationalEmergency
Namespace Prefix:	lnkb_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of loans deferred.

+ References

No definition available.

+ Details

Name:	lnkb_NumberOfLoansDeferred
Namespace Prefix:	lnkb_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472

+ Details

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

- Definition

For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472

+ Details

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

- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5212-111524

+ Details

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

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_LoansAndLeasesReceivableDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

+ Details

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

- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953401-111524

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 55
-Paragraph 79
-URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922352-210448

Reference 3: 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(3)(b))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 14
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 55
-Paragraph 80
-URI https://asc.fasb.org/extlink&oid=124267575&loc=SL82922355-210448

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (1)

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1404
-Paragraph (a)

+ Details

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

- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878

Reference 3: 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(22))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_FederalHomeLoanBankCertificatesAndObligationsFHLBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=lnkb_RealEstateCommercialLoansAndConstructionAndDevelopmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=lnkb_PurchasedCreditImpairedLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=lnkb_PurchasedCreditImpairedLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	lnkb_UnexpectedEventAxis=lnkb_CovidNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis=lnkb_SmallBusinessAdministrationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	lnkb_CommercialRealEstatePortfolioSegmentAxis=lnkb_OwnerOccupiedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: