Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Revenues:
Oil and gas operations	$ 988us-gaap_OilAndGasRevenue	$ 1,093us-gaap_OilAndGasRevenue
Total revenues	988us-gaap_Revenues	1,093us-gaap_Revenues
Operating costs and expenses:
Oil and gas operating	218us-gaap_CostOfGoodsSoldOilAndGas	209us-gaap_CostOfGoodsSoldOilAndGas
Selling, general and administrative	3,862	3,520
Depreciation, depletion and amortization	807	743
Impairment losses	18,129us-gaap_AssetImpairmentCharges
Gain on BWI contingency	(800)HKNI_GainOnContingency
Total operating costs and expenses	22,216us-gaap_OperatingExpenses	4,472us-gaap_OperatingExpenses
Loss from operations	(21,228)us-gaap_OperatingIncomeLoss	(3,379)us-gaap_OperatingIncomeLoss
Other income and expenses:
Interest and other expenses	(166)us-gaap_OtherNonoperatingExpense	(36)us-gaap_OtherNonoperatingExpense
Interest and other income - related party	1,608HKNI_InterestAndOtherIncomeRelatedParty	2,250HKNI_InterestAndOtherIncomeRelatedParty
Interest and other income	80us-gaap_OtherNonoperatingIncome	163us-gaap_OtherNonoperatingIncome
Impairment loss on investment in Global	(937)
Total other income	585us-gaap_NonoperatingIncomeExpense	2,377us-gaap_NonoperatingIncomeExpense
Loss from continuing operations	(20,643)	(1,002)
Gain on disposal of discontinued operations	41
Loss from discontinued operations	(3,357)	(471)
Net loss	(23,959)us-gaap_NetIncomeLoss	(1,473)us-gaap_NetIncomeLoss
Accrual of dividends related to preferred stock	(15)	(16)
Payment of preferred stock dividends and repurchase of preferred stock	(63)	16
Net loss attributed to common stock	$ (24,037)	$ (1,473)
Loss per common share from continuing operations	$ (52.66)	$ (2.46)
Loss per common share from discontinued operations	$ (8.43)	$ (1.15)
Net loss per common share, basic and diluted	$ (61.09)us-gaap_EarningsPerShareBasicAndDiluted	$ (3.61)us-gaap_EarningsPerShareBasicAndDiluted
Weighted average common shares outstanding:
Basic and diluted	393,497	408,166

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Aggregate revenue during the period related to oil and gas business activities.

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The aggregate amount of other expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating expense recognized during the period. Such amounts may include: (a) unusual costs, (b) loss on foreign exchange transactions, (c) losses on securities (net of profits), and (d) miscellaneous other expense items.

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The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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The amount of preferred stock dividends that is an adjustment to net income apportioned to common stockholders.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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