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Number of geographic segments.

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Percent of Restocking Fee

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Reserve for the amount of products sold that the entity expects to be returned by the purchaser.

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Percent of unopened, unexpired product that terminated distributors purchased within the prior twelve months can be returned for a full refund

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of valuation reserve for inventory.

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Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Summary of Significant Accounting Policies (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014 Segment	Dec. 31, 2013	Jun. 30, 2014
Summary Of Significant Accounting Policies
Foreign currency transaction gain (loss), realized	$ (300,000)		$ (400,000)
Derivative instruments, gain (loss) realized in income, net	15,000		309,000
Bad debt expenses			0us-gaap_ProvisionForDoubtfulAccounts	0us-gaap_ProvisionForDoubtfulAccounts
Inventory valuation reserves	200,000us-gaap_InventoryValuationReserves		200,000us-gaap_InventoryValuationReserves		700,000us-gaap_InventoryValuationReserves
Money back guarantee period			30 days
Percentage of products can be returned for a full refund by terminated distributors	30.00%		30.00%
Percent of restocking fee	10.00%lfvn_PercentofRestockingFee		10.00%lfvn_PercentofRestockingFee
Reserve for sales returns	100,000lfvn_ReserveForSalesReturns		100,000lfvn_ReserveForSalesReturns		600,000lfvn_ReserveForSalesReturns
Research and development			1,200,000us-gaap_ResearchAndDevelopmentExpense	900,000us-gaap_ResearchAndDevelopmentExpense
Income tax expenses	587,000us-gaap_IncomeTaxExpenseBenefit	1,519,000us-gaap_IncomeTaxExpenseBenefit	3,031,000us-gaap_IncomeTaxExpenseBenefit	3,371,000us-gaap_IncomeTaxExpenseBenefit
Effective tax rate			32.90%
Statutory tax rate			35.00%
Antidilutive securities excluded from EPS calculation (in shares)	0.4	0.6	0.6	0.7
Number of operating segments			1us-gaap_NumberOfOperatingSegments
Number of geographic segments			2lfvn_NumberOfGeographicSegments
Japan
Summary Of Significant Accounting Policies
Long-lived assets	1,700,000		1,700,000		2,300,000
United States
Summary Of Significant Accounting Policies
Long-lived assets	8,400,000		8,400,000		9,800,000
Cash Accounts Held Primarily At One Financial Institution
Summary Of Significant Accounting Policies
Concentration of credit risk			15,000,000
Cash Accounts Held At Other Financial Institutions
Summary Of Significant Accounting Policies
Concentration of credit risk			$ 3,700,000