Notes and Advances Payable (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Notes and advances payable, interest at 8.0%, due on demand | Officers directors and affiliates
Notes Payable [Line Items]
Notes and advances payable, interest rate	8.00%	8.00%
Notes and advances payable, interest at 9.7%, due on demand | Officers directors and affiliates
Notes Payable [Line Items]
Notes and advances payable, interest rate	9.70%	9.70%
Note payable interest at 12.0% due March 2013 | Officers directors and affiliates
Notes Payable [Line Items]
Notes and advances payable, interest rate	12.00%	12.00%
Notes and advances payable, maturity period	2013-03	2013-03
Note payable interest at 12.0% due March 2013 | Unrelated Parties
Notes Payable [Line Items]
Notes and advances payable, interest rate	12.00%	12.00%
Notes and advances payable, maturity period	2013-03	2013-03