Stockholders' Equity - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]	Dec. 31, 2013 Series A Convertible Preferred Stock [Member]	Dec. 31, 2012 Series A Convertible Preferred Stock [Member]	Dec. 31, 2013 Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock shares authorized	1,000,000	1,000,000					50,000,000
Preferred stock shares issued	102,054	161,359			183,550
Preferred stock dividend percentage received					4.00%
Preferred stock redemption price paid					$ 10.00
Preferred stock dividends issued					5,932	6,931
Dividends in arrears					$ 10
Preferred stock converted into common stock					1.66611
Convertible preferred stock price per share	$ 0.001	$ 0.001			$ 11.20
Preferred stock voting rights					Each share of the Series A convertible preferred stock is entitled to one vote for each share of common stock into which the preferred stock is convertible.
Preference of preferred stock					$ 10.00
Preferred stock redemption period					Two years
Common stock shares issued				34,115
Common stock voting rights			The holders of common stock are entitled to one vote per share.
Common stock dividends declared	$ 0
Common stock, capital shares reserved for future issuances	8,302,697