XML 42 R31.htm IDEA: XBRL DOCUMENT
v3.22.1

Summary of Significant Accounting Policies (Details Narrative) - USD ($) |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 06, 2019 | Sep. 06, 2018 | Jul. 30, 2021 | Aug. 24, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 17, 2021
Accounts Receivable |  |  |  |  | $ 1,500 | $ 2,102 |
Insured Accounts By The Federal Deposit Insurance Corporation |  |  |  |  | 250 |  |
Cash And Cash Equivalents In Excess Of Fdic Limits |  |  |  |  | $ 10,401 |  |
Material, Subassembly And Product Procurements Sourced Internationally |  |  |  |  | 32.40% | 53.00% |
Sourced From Seven Suppliers |  |  |  |  | 31.00% |  |
Sourced From Three Suppliers |  |  |  |  |  | 48.00% |
Advertising And Promotion Costs |  |  |  |  | $ 243 | $ 214 |
Engineering, Research And Development Costs |  |  |  |  | $ 8,203 | $ 7,869 |
Total Aggregate Grant-date Fair Value | $ 280 | $ 140 | $ 250 | $ 240 |  |  |
Restricted Stock Units With A Grant-date Fair Value | $ 40 | $ 20 | $ 50 | $ 40 |  |  |
Issued Shares Of Common Stock | 10,389 | 4,050 |  | 24,505 | 18,298,999 | 13,962,366 | 34,264
July 1, 2021 [Member] |  |  |  |  |  |  |
Net Decrease In Accumulated Deficit |  |  |  |  | $ 1,300 |  |
Net Increase In Inventory |  |  |  |  | $ 1,300 |  |
Minimum [Member] |  |  |  |  |  |  |
Voting Interest |  |  |  |  | 20.00% |  |
Minimum [Member] | Machinery And Equipment [Member] |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  | 3 years |  |
Minimum [Member] | Leasehold Improvements [Member] |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  | 5 years |  |
Maximum [Member] |  |  |  |  |  |  |
Voting Interest |  |  |  |  | 50.00% |  |
Maximum [Member] | Machinery And Equipment [Member] |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  | 10 years |  |
Maximum [Member] | Leasehold Improvements [Member] |  |  |  |  |  |  |
Property Plant And Equipment Useful Life |  |  |  |  | 8 years |  |

X
- References No definition available. + Details
Name: | bkti_CashAndCashEquivalentsInExcessOfFdicLimits
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | bkti_InsuredAccountsByTheFederalDepositInsuranceCorporation
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | bkti_MaterialSubassemblyAndProductProcurementsSourcedInternationallypercentage
Namespace Prefix: | bkti_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | bkti_NetDecreaseInAccumulatedDeficit
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | bkti_NetIncreaseInInventory
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | bkti_RestrictedStockUnitsGrantDateFairValuePerShare
Namespace Prefix: | bkti_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | bkti_SourcedFromSevenSuppliersPercentage
Namespace Prefix: | bkti_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | bkti_SourcedFromThreeSupplierspercentage
Namespace Prefix: | bkti_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | bkti_TotalAggregateGrantDateFairValue
Namespace Prefix: | bkti_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of decrease from sale of accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 11 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919244-210447 + Details
Name: | us-gaap_AccountsReceivableSale
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(8)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
Name: | us-gaap_AmortizationOfFinancingCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: 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(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
Name: | us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of purchased research and development assets that are acquired in a business combination have no alternative future use and are therefore written off in the period of acquisition. + References No definition available. + Details
Name: | us-gaap_ResearchAndDevelopmentInProcess
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_AwardDateAxis=bkti_JulyOneTwoThousandTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |