Financial Statement Presentation and Significant Accounting Policies - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013	Jul. 16, 2013	Dec. 31, 2012
Schedule Of Significant Accounting Policies [Line items]
Reverse stock split	Effective October 15, 2013, every ten shares of the Company’s Old Common Stock were exchanged for one share of the Company’s new common stock (the “New Common Stock”).
Common stock, shares authorized	66,500,000	665,000,000	66,500,000
Common stock, shares issued	12,213,219		12,074,314
Common stock, shares outstanding	12,213,219		12,074,314