Subsequent Events - Additional Information (Detail) (Subsequent Event [Member], USD $)	0 Months Ended
	Nov. 07, 2013
Subsequent Event [Member]
Subsequent Event [Line Items]
Notice from NASDAQ	On November 7, 2013, we received a notice from The NASDAQ Stock Market LLC stating that the minimum bid price of our common stock had been below $1.00 per share for 30 consecutive business days and that the Company was therefore not in compliance with the minimum bid price requirement for continued listing set forth in Marketplace Rule 5550(a)(2). The notification letter states that we will be afforded 180 calendar days, or until May 6, 2014, to regain compliance with the minimum bid price requirement. To regain compliance, the closing bid price of our common stock must meet or exceed $1.00 per share for at least ten consecutive business days. NASDAQ may, in its discretion, require our common stock to maintain a bid price of at least $1.00 per share for a period in excess of ten consecutive business days, but generally no more than 20 consecutive business days, before determining that the Company has demonstrated an ability to maintain long-term compliance.
Minimum bid price of common stock	$ 1.00
Last date for compliance of minimum bid price requirement	May 06, 2014
Minimum bid price requirement, additional grace period	180 days