Notes and advances payable (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Notes Payable [Line Items]
Notes and advances payable, related parties	$ 508,991	$ 109,319
Notes and advances payable, unrelated parties	250,000	250,000
Total notes and advance payable	758,991	359,319
Officers directors and affiliates
Notes Payable [Line Items]
Notes and advances payable, related parties	508,991	109,319
Officers directors and affiliates | Notes and advances payable, interest at 8.0%, due on demand
Notes Payable [Line Items]
Notes and advances payable, related parties	12,882	24,319
Officers directors and affiliates | Notes and advances payable, interest at 9.7%, due on demand
Notes Payable [Line Items]
Notes and advances payable, related parties	85,000	85,000
Officers directors and affiliates | Note payable interest at 12.0% due March 2013
Notes Payable [Line Items]
Notes and advances payable, related parties	150,000
Officers directors and affiliates | Collateralized note payable
Notes Payable [Line Items]
Notes and advances payable, related parties	261,109
Unrelated Parties
Notes Payable [Line Items]
Notes and advances payable, unrelated parties	250,000	250,000
Unrelated Parties | Note payable interest at 12.0% due March 2013
Notes Payable [Line Items]
Notes and advances payable, unrelated parties	250,000
Unrelated Parties | Note Payable interest at 12.0% due March 2012
Notes Payable [Line Items]
Notes and advances payable, unrelated parties		$ 250,000