Common Stock - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Class of Stock [Line Items]
Common stock, shares authorized	100,000,000	100,000,000	100,000,000
Common stock, par value	$ 0.0001	$ 0.0001	$ 0.0001
Common stock, shares issued	8,790,764	8,790,764	5,792
Common stock, par value	$ 5.00	$ 5.00
Reserve share split ratio per share	0.01258	0.01258
Long term warrant liability	$ 5,310	$ 5,310
Warrants, Exercise Price of $5.75 Per Share [Member]
Class of Stock [Line Items]
Warrants issued	1,421,698	1,421,698
Warrants exercise price	5.75	5.75
Long term warrant liability	4,800	4,800
Warrants, Exercise Price of $5.00 Per Share [Member]
Class of Stock [Line Items]
Warrants issued	121,739	121,739
Warrants exercise price	5.00	5.00
Long term warrant liability	$ 500	$ 500