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Fair Value Measurements (Details Narrative) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Impairment losses $ 18,129us-gaap_AssetImpairmentCharges
BWI Weathered Lagoon Plant  
Impairment losses 6,100us-gaap_AssetImpairmentCharges
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_OtherMachineryAndEquipmentMember
Construction in Progress - Arctic Star Plant  
Impairment losses 10,300us-gaap_AssetImpairmentCharges
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_ConstructionInProgressMember
Proved Oil and Gas Properties  
Impairment losses 1,400us-gaap_AssetImpairmentCharges
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= HKNI_OilAndGasPropertiesAMember
Unproved Oil and Gas Properties  
Impairment losses $ 314us-gaap_AssetImpairmentCharges
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= HKNI_OilAndGasPropertiesBMember