Notes Payable - Summary of notes payable and accrued interest - Parentheticals (Details) (Vulcan Note payable, USD $)	Dec. 31, 2012	Dec. 31, 2011
Vulcan Note payable
Debt Instrument [Line Items]
Net of debt discount	$ 100,000	$ 0

The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Name:	us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant