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Fair Value Of Financial Instruments (Schedule Of Impact On Carrying Value Of Cell C Investment) (Details) $ in Thousands | Dec. 31, 2020 USD ($)
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1.0% Increase [Member] | Weighted Average Cost of Capital (WACC) Rate [Member] |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Sensitivity for fair value of investment, increase (decrease) in valuation based on 2% change | $ 0
1.0% Increase [Member] | EBITDA Multiple [Member] |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Sensitivity for fair value of investment, increase (decrease) in valuation based on 2% change | 627
1% Decrease [Member] | Weighted Average Cost of Capital (WACC) Rate [Member] |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Sensitivity for fair value of investment, increase (decrease) in valuation based on 2% change | 1,514
1% Decrease [Member] | EBITDA Multiple [Member] |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Sensitivity for fair value of investment, increase (decrease) in valuation based on 2% change | $ 0

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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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- 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
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- Details
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