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Investment in Global (Details Narrative) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Ownership percentage of Global's outstanding shares 35.46%HKNI_AvailableForSaleSecuritiesOwnershipPercentage 34.51%HKNI_AvailableForSaleSecuritiesOwnershipPercentage
Foreign currency translation adjustments $ (548)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax $ 160us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
Unrealized loss on available for sale investments (9,209)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax (4,626)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
Impairment loss on investment in Global 937us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet  
Cost of Global shares purchased during the period 422us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesEquity 171us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesEquity
Investment in Global    
Shares of Global purchased during the period 343,000HKNI_AvailableForSaleSecuritiesSharesPurchased
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
105,000HKNI_AvailableForSaleSecuritiesSharesPurchased
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
Cost of Global shares purchased during the period $ 422us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesEquity
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
$ 171us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesEquity
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember