XML 65 R45.htm IDEA: XBRL DOCUMENT
v3.25.1

Note 6 - Debt (Details Textual) $ in Thousands |  |  |  |  | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 30, 2024 USD ($) | Nov. 22, 2023 | Nov. 22, 2022 USD ($) | Sep. 25, 2019 USD ($) | Sep. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Apr. 06, 2021 USD ($)
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) [Member] |  | Prime Rate [Member] |  |  |  |  |
Alterna Capital Solutions, LLC [Member] | Accounts Receivable [Member] |  |  |  |  |  |  |  |
Gain/(Loss) on Exchange of Short-Term Trade Receivables |  |  |  |  | $ 0 |  | $ 0 |
Alterna Capital Solutions, LLC [Member] | Invoice Purchase and Security Agreement [Member] |  |  |  |  |  |  |  |
Line of Credit Facility, Expiration Period (Year) |  | 1 year | 1 year |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 15,000 |  |  |  |  |
Line of Credit Facility, Borrowing Capacity, Percentage of Net Orderly Liquidation Value |  |  | 75.00% |  |  |  |  |
Line of Credit Facility, Borrowing Capacity, Maximum Percentage of Eligible Account Balances |  |  | 100.00% |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 1.85% |  |  |  |  |
Debt Instrument, Interest Expense and Related Servicing Fees |  |  |  |  |  | $ 356 | 648 |
Transferred Short-Term Trade Receivable to Cash, Percentage |  |  | 85.00% |  |  |  |  |
Transfers Accounted for as Secured Borrowings, Assets, Carrying Amount |  |  |  |  |  | 49,700 | 67,400 |
Proceeds from Exchange of Short-Term Trade Receivables |  |  |  |  |  | 46,400 | $ 74,600 |
JP Morgan Chase Bank, N.A. [Member] | Notes Payable to Banks [Member] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 743
U.S. Bank Equipment Finance [Member] | Notes Payable to Banks [Member] |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 5.11% |  |  |  |
Debt Instrument, Face Amount |  |  |  | $ 425 |  |  |  |
Debt Instrument, Number of Payments for Principal and Interest |  |  |  | 60 |  |  |  |
Debt Instrument, Periodic Payment |  |  |  | $ 8 |  |  |  |
Revolving Credit Facility [Member] | Fifth Third Credit Agreement [Member] |  |  |  |  |  |  |  |
Line of Credit Facility, Expiration Period (Year) | 1 year |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 6,000 |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity, Accordion Feature | 4,000 |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity, Including Accordion Feature, Total | $ 10,000 |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.50% |  |  |  |  |  |  |
Debt Instrument, Covenant, Total Funded Debt Ratio | 2 |  |  |  |  |  |  |
Debt Instrument, Covenant, Fixed Charge Ratio | 1.2 |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  |  | $ 0 |  |

X
- Definition Information pertaining to the debt covenant. + References No definition available. + Details
Name: | bkti_DebtInstrumentCovenantFixedChargeRatio
Namespace Prefix: | bkti_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Information pertaining to the debt covenant. + References No definition available. + Details
Name: | bkti_DebtInstrumentCovenantTotalFundedDebtRatio
Namespace Prefix: | bkti_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of interest expense and related servicing fees attached to a debt instrument. + References No definition available. + Details
Name: | bkti_DebtInstrumentInterestExpenseAndRelatedServicingFees
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of required periodic payments including both interest and principal payments. + References No definition available. + Details
Name: | bkti_DebtInstrumentNumberOfPaymentsForPrincipalAndInterest
Namespace Prefix: | bkti_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The gain or loss associated with the exchange of short-term trade receivables. + References No definition available. + Details
Name: | bkti_GainlossOnExchangeOfShorttermTradeReceivables
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Maximum percentage of eligible accounts receivable for borrowing capacity of the line of credit facility. + References No definition available. + Details
Name: | bkti_LineOfCreditFacilityBorrowingCapacityMaximumPercentageOfEligibleAccountBalances
Namespace Prefix: | bkti_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum percentage of net orderly liquidation value of inventory for borrowing capacity of the line of credit facility. + References No definition available. + Details
Name: | bkti_LineOfCreditFacilityBorrowingCapacityPercentageOfNetOrderlyLiquidationValue
Namespace Prefix: | bkti_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Expansion on the maximum amount allowed on a line of credit. + References No definition available. + Details
Name: | bkti_LineOfCreditFacilityMaximumBorrowingCapacityAccordionFeature
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References No definition available. + Details
Name: | bkti_LineOfCreditFacilityMaximumBorrowingCapacityIncludingAccordionFeatureTotal
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The cash inflow from exchange of short-term trade receivables. + References No definition available. + Details
Name: | bkti_ProceedsFromExchangeOfShorttermTradeReceivables
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of value of transferred receivables to be received in cash. + References No definition available. + Details
Name: | bkti_TransferredShorttermTradeReceivableToCashPercentage
Namespace Prefix: | bkti_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482949/835-30-55-8 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482900/835-30-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482925/835-30-45-2 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of the required periodic payments including both interest and principal payments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -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 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477734/942-470-50-3 + Details
Name: | us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Indicates type of variable interest rate on debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 470 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477734/942-470-50-3 + Details
Name: | us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_LineOfCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + 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(22)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: 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(19)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (b)(1) -SubTopic 30 -Topic 860 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A + Details
Name: | us-gaap_TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=bkti_AlternaCapitalSolutionsLlcMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=bkti_InvoicePurchaseAndSecurityAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=bkti_JpMorganChaseBankNaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_NotesPayableToBanksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=bkti_UsBankEquipmentFinanceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LineOfCreditFacilityAxis=bkti_FifthThirdCreditAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |