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Note 14 - Revenue From Contracts With Customers - Deferred Contract Costs (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Balance, net | $ 13,257 | $ 10,930
Additions | 9,405 | 9,294
Amortization | (8,928) | (6,967)
Balance, net | 13,734 | 13,257
Cost to Obtain Contract [Member] |  |
Balance, net | 13,174 | 10,850
Additions | 9,381 | 9,273
Amortization | (8,902) | (6,949)
Balance, net | 13,653 | 13,174
Cost to Fulfill Contract [Member] |  |
Balance, net | 83 | 80
Additions | 24 | 21
Amortization | (26) | (18)
Balance, net | $ 81 | $ 83

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- Definition Amount of addition to capitalized contract cost. + References No definition available. + Details
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Namespace Prefix: | kfs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- 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 -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-3 + Details
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- 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 -Topic 340 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479483/340-40-50-3 + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Balance Type: |
Period Type: |