XML 65 R46.htm IDEA: XBRL DOCUMENT
v3.22.4

REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 168,811 | $ 165,016 | $ 120,440
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | $ 171,660 |  |
Revenue, Remaining Performance Obligation, Percentage | 60.00% |  |
Capitalized Contract Cost [Line Items] |  |  |
Amortization of deferred contract acquisition and fulfillment costs | $ 10,865 | 8,075 | 4,231
Deferred contract acquisition and fulfillment costs, current | 10,759 | 9,079 |
Deferred contract acquisition and fulfillment costs, noncurrent | 21,691 | 22,621 |
Enterprise, Education & Technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 120,190 | 118,932 | 80,449
Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 48,621 | 46,084 | 39,991
Revenue Benchmark | Revenue from Rights Concentration Risk | Enterprise, Education & Technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 120,190 | $ 118,932 | $ 80,449
Concentration Risk, Percentage | 100.00% | 100.00% | 100.00%
Revenue Benchmark | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ 46,084 | $ 39,991
Concentration Risk, Percentage | 100.00% | 100.00% | 100.00%
Sales | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 48,621 |  |
Subscription [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 152,480 | $ 144,966 | $ 104,064
Subscription [Member] | Revenue Benchmark | Revenue from Rights Concentration Risk | Enterprise, Education & Technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 113,551 | $ 108,842 | $ 74,473
Concentration Risk, Percentage | 94.50% | 91.50% | 92.60%
Subscription [Member] | Revenue Benchmark | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ 36,124 | $ 29,591
Concentration Risk, Percentage | 80.10% | 78.40% | 74.00%
Subscription [Member] | Sales | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 38,929 |  |
Professional Services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | 16,331 | $ 20,050 | $ 16,376
Professional Services | Revenue Benchmark | Revenue from Rights Concentration Risk | Enterprise, Education & Technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 6,639 | $ 10,090 | $ 5,976
Concentration Risk, Percentage | 5.50% | 8.50% | 7.40%
Professional Services | Revenue Benchmark | Revenue from Rights Concentration Risk | Media and Telecom |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax | $ 9,692 | $ 9,960 | $ 10,400
Concentration Risk, Percentage | 19.90% | 21.60% | 26.00%
Costs To Obtain Contract [Member] |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Beginning balance | $ 26,274 | $ 17,683 | $ 9,015
Additions to deferred contract acquisition costs during the period | 10,037 | 15,594 | 11,997
Amortization of deferred contract acquisition and fulfillment costs | (9,383) | (7,003) | (3,329)
Deferred contract acquisition and fulfillment costs, current | 8,979 | 7,671 | 4,788
Deferred contract acquisition and fulfillment costs, noncurrent | 17,949 | 18,603 | 12,895
Ending balance | 26,928 | 26,274 | 17,683
Total deferred costs to obtain a contract | 26,928 | 26,274 | 17,683
Costs To Fulfill Contract [Member] |  |  |
Capitalized Contract Cost [Line Items] |  |  |
Beginning balance | 5,426 | 4,041 | 3,993
Additions to deferred contract acquisition costs during the period | 1,578 | 2,457 | 950
Amortization of deferred contract acquisition and fulfillment costs | (1,482) | (1,072) | (902)
Deferred contract acquisition and fulfillment costs, current | 1,780 | 1,408 | 1,060
Deferred contract acquisition and fulfillment costs, noncurrent | 3,742 | 4,018 | 2,981
Ending balance | 5,522 | 5,426 | 4,041
Total deferred costs to obtain a contract | 5,522 | $ 5,426 | $ 4,041
Billed Revenues |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | 61,107 |  |
Unbilled Revenues |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |
Revenue, Remaining Performance Obligation, Amount | $ 110,553 |  |

X
- Definition Additions to deferred contract acquisition costs during the period. + References No definition available. + Details
Name: | kltr_AdditionsToDeferredContractAcquisitionCostsDuringPeriod
Namespace Prefix: | kltr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
Name: | us-gaap_CapitalizedContractCostAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_CapitalizedContractCostLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
Name: | us-gaap_CapitalizedContractCostNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
Name: | us-gaap_CapitalizedContractCostNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126905575&loc=SL49131252-203054 + Details
Name: | us-gaap_CapitalizedContractCostNetNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
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_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130543-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligationPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=kltr_EnterpriseEducationAndTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=kltr_MediaAndTelecomMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_RevenueFromRightsConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=kltr_SubscriptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=kltr_ProfessionalServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalizedContractCostAxis=kltr_CostsToObtainContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalizedContractCostAxis=kltr_CostsToFulfillContractMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=us-gaap_BilledRevenuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivablesByBillingStatusTypeAxis=us-gaap_UnbilledRevenuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |