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Note 11 - Costs to Obtain and Fulfill a Contract (Details Textual) $ in Thousands | 3 Months Ended
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Mar. 31, 2021 USD ($)
Deferred Costs of Acquisition [Member] |
Increase (Decrease) in Capitalized Costs | $ 52,100
Capitalized Contract Cost, Amortization | $ 48,000
Deferred Costs of Acquisition [Member] | Minimum [Member] |
Capitalized Contract Cost, Amortization Period (Year) | 1 year
Deferred Costs of Acquisition [Member] | Maximum [Member] |
Capitalized Contract Cost, Amortization Period (Year) | 10 years
Domain Registration Costs [Member] |
Capitalized Contract Cost, Impairment Loss | $ 0

X
- Definition Amount of increase (decrease) in capitalization expense for asset recognized from cost incurred to obtain or fulfill contract with customer. + References No definition available. + Details
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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 http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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Period Type: | duration

X
- Definition Amortization period of cost capitalized in obtaining or fulfilling contract with customer, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68051541&loc=SL49131251-203054 + Details
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X
- Definition Amount of impairment loss 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 http://asc.fasb.org/extlink&oid=68051541&loc=SL49131252-203054 + Details
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Period Type: | duration

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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