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Commitments and Contingencies (Details Textual) (USD $) | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Commitments and Contingencies [Line Items] |  |  |  |  |
Operating Leases, Rent Expense | $ 42,000 | $ 68,000 | $ 88,000 | $ 131,000 |
Monthly Lease And Rental Expense |  |  |  |  | $ 11,000

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- Details
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Namespace Prefix: | biof_
Data Type: | xbrli:stringItemType
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Period Type: | duration

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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | biof_MonthlyLeaseAndRentalExpense
Namespace Prefix: | biof_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration