Notes and Advances Payable (Parenthetical) (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Notes Payable [Line Items]
Notes and advances payable, interest rate	7.00%	7.00%
Notes and advances payable, maturity period	2014-07	2014-07
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	7.50%	7.50%
Notes and advances payable, maturity period	2015-03	2015-03
Notes payable, interest at 7.5 %, due March 2015 | Unrelated Parties
Notes Payable [Line Items]
Notes and advances payable, interest rate	7.50%	7.50%
Notes and advances payable, maturity period	2015-03	2015-03
Notes payable, interest at 7.0%, due July 2014 | Unrelated Parties | Burlingame Equity Investors II, LP
Notes Payable [Line Items]
Notes and advances payable, interest rate	7.00%	7.00%
Notes and advances payable, maturity period	2014-07	2014-07
Notes payable, interest at 7.0%, due July 2014 | Unrelated Parties | Burlingame Equity Investors Master Fund, LP
Notes Payable [Line Items]
Notes and advances payable, interest rate	7.00%	7.00%
Notes and advances payable, maturity period	2014-07	2014-07