Loans purchased at discount.

No definition available.

Name:	eqbk_LoansPurchasedAtDiscount
Namespace Prefix:	eqbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Mortgage pool residential loans.

+ References

No definition available.

+ Details

Name:	eqbk_MortgagePoolResidentialLoans
Namespace Prefix:	eqbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of loan pool.

+ References

No definition available.

+ Details

Name:	eqbk_NumberOfLoanPool
Namespace Prefix:	eqbk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Outstanding commitments on loans.

+ References

No definition available.

+ Details

Name:	eqbk_OutstandingCommitmentsOnLoans
Namespace Prefix:	eqbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Payment to Acquire of USDA guaranteed loans.

+ References

No definition available.

+ Details

Name:	eqbk_PaymentToAcquireOfUSDAGuaranteedLoans
Namespace Prefix:	eqbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Payments to acquire residential loan participations.

+ References

No definition available.

+ Details

Name:	eqbk_PaymentsToAcquireResidentialLoanParticipations
Namespace Prefix:	eqbk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Unamortized purchase accounting discounts.

+ References

No definition available.

+ Details

Name:	eqbk_UnamortizedPurchaseAccountingDiscounts
Namespace Prefix:	eqbk_
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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

+ Details

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

- Definition

Carrying value as of the balance sheet date of payments made in excess of existing cash balances, which will be honored by the bank but reflected as a loan to the entity. Overdrafts generally have a very short time frame for correction or repayment and are therefore more similar to short-term bank financing than trade financing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481573/470-10-45-10

+ Details

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

- Definition

Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

+ Details

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

- Details

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

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=eqbk_LoanPoolsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Loans and Allowance for Credit Losses - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) Pool	Jun. 30, 2025 USD ($) Pool	Dec. 31, 2025 USD ($)
Accounts Notes And Loans Receivable [Line Items]
Loans	$ 5,341,305		$ 5,341,305		$ 4,145,424
Purchases of residential loan participations			8,023
Purchases of government guaranteed loans	33,596	$ 61,987	33,596	$ 61,987
Unamortized purchase accounting discounts	20,840		20,840		12,853
Loans purchased at discount	1,315,781		1,315,781		627,644
Outstanding commitments on loans	0	$ 57	0	$ 57
Consumer Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Over-draft deposit accounts	1,001		1,001		878
Residential Real Estate/Mortgage Loan Pools [Member]
Accounts Notes And Loans Receivable [Line Items]
Loans	$ 276,830		$ 276,830		$ 252,884
Purchased pools of residential real estate \| Pool			1	0
Mortgage pool residential loans			$ 15,923