XML 47 R35.htm IDEA: XBRL DOCUMENT
v3.23.1

Fair Value (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Senior Secured Convertible Notes (the "2020 Notes") [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Schedule of reconciliation of fair values |
2020 Notes |  |  |  |
Ending fair value balance - December 31, 2020 |  | $ | 13,398,000 |
Principal payments in cash and Common Stock |  |  | (15,172,727 | )
Change in fair value reported in the statements of operations |  |  | 2,030,904 |
Change in fair value reported in other comprehensive income |  |  | (70,000 | )
Gain on extinguishment of debt reported in the statement of operations |  |  | (186,177 | )
Ending fair value balance - October 5, 2021 |  | $ | — |
Senior Convertible Notes [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Schedule of reconciliation of fair values |
Senior Convertible Notes |  |  |  |
Beginning fair value balance on October 5, 2021 |  | $ | 18,000,000 |
Principal payments in cash and Common Stock |  |  | — |
Change in fair value reported in the statements of operations |  |  | (665,000 | )
Change in fair value reported in other comprehensive income |  |  | (30,000 | )
Ending fair value balance - December 31, 2021 |  | $ | 17,305,000 |
Principal payments in cash and Common Stock |  |  | (5,337,273 | )
Change in fair value reported in the statements of operations |  |  | 2,884,273 |
Change in fair value reported in other comprehensive income |  |  | (245,000 | )
Ending fair value balance - December 31, 2022 |  | $ | 14,607,000 |
Schedule of fair value by using key inputs |
|  | As of December 31, |
Fair Value Assumptions - Senior Convertible Notes |  | 2022 |  |  | 2021 |
Face value principal payable |  | $ | 14,662,727 |  |  | $ | 20,000,000 |
Conversion prices, as adjusted for the Reverse Stock Split and certain securities offerings |  | $ | 4.75 |  |  | $ | 4.05 |
Value of Common Stock on measurement date |  | $ | 0.69 |  |  | $ | 1.75 |
Expected term (years) |  |  | 1.8 |  |  |  | 2.8 |
Volatility |  |  | 77 | % |  |  | 75 | %
Market yield (range) |  |  | 44.3 to 43.9 | % |  |  | 37.1 to 0 | %
Risk free rate |  |  | 4.4 | % |  |  | 1.0 | %
Issue date |  |  | October 5, 2021 |  |  |  | October 5, 2021 |
Maturity date |  |  | October 5, 2024 |  |  |  | October 5, 2024 |
Private Warrants [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Schedule of reconciliation of fair values |
|  | As of December 31, |
Fair Value Assumptions - Private Warrants |  | 2022 |  |  | 2021 |
Number of Private Warrants |  |  | 225,635 |  |  |  | 225,635 |
Exercise price, as adjusted for the Reverse Stock Split |  | $ | 230.00 |  |  | $ | 230.00 |
Value of Common Stock on measurement date |  | $ | 0.69 |  |  | $ | 1.75 |
Expected term (years) |  |  | 1.46 |  |  |  | 2.46 |
Volatility |  |  | NM |  |  |  | 85.8 | %
Risk free rate |  |  | NM |  |  |  | 0.8 | %
Fair Value Measurement – 2022 Unit Offering Common and Underwriter Warrants
Schedule of fair value by using key inputs |
| Year Ended December 31, |
| 2022 |  |  | 2021 |
Fair value balance at beginning of period | $ | 63,178 |  |  | $ | 311,376 |
Change in fair value reported in the statements of operations |  | (63,178 | ) |  |  | (248,198 | )
Fair value balance at end of period | $ | — |  |  | $ | 63,178 |
2022 Common Warrants and Underwriter Warrants [Member] |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Schedule of fair value measurement unit offering common and underwriter warrants |
Fair Value Assumptions - 2022 Common and Underwriter Warrants |  | July 5, 2022 |
Exercise price as adjusted for the Reverse Stock Split | $ | 4.60 |
Expected term (years) |  | 5.0 |
Volatility |  | 136.9 | %

X
- Definition Tabular disclosure of fair value measurement unit offering common and underwriter warrants. + References No definition available. + Details
Name: | kern_FairValueMeasurementUnitOfferingCommonandUnderwriterWarrantsTableTextBlock
Namespace Prefix: | kern_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19279-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI https://asc.fasb.org/extlink&oid=126976982&loc=SL7498348-110258 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

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