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Fair Value Measurements - Assets And Liabilities Measured At Fair Value On Recurring Basis (Detail) (USD $) | Jun. 30, 2014 | Jun. 30, 2013
--- | --- | ---
Fair Value, Inputs, Level 1 |  |
Fair Value Measurements [Line Items] |  |
Warrant derivative liabilities | $ 0 | $ 0
Fair Value, Inputs, Level 2 |  |
Fair Value Measurements [Line Items] |  |
Warrant derivative liabilities | 0 | 0
Fair Value, Inputs, Level 3 |  |
Fair Value Measurements [Line Items] |  |
Warrant derivative liabilities | $ 571,000 | $ 143,000

X
- Details
Name: | flux_FairValueMeasurementsLineItems
Namespace Prefix: | flux_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity. + References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureRecurring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant