Stockholders' Equity (Detail) (USD $)	12 Months Ended				1 Months Ended	12 Months Ended
	Dec. 31, 2012 Stock Options [Member]	Dec. 31, 2011 Stock Options [Member]	Dec. 31, 2010 Stock Options [Member]	Dec. 31, 2011 Restricted Stock [Member]	Jul. 31, 2012 Common Stock [Member]	Dec. 31, 2012 Common Stock [Member]	Dec. 31, 2010 Common Stock [Member]	Dec. 31, 2012 Blank Check Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues							4,000,000
Share Price (in Dollars per share)							$ 3.00
Preferred Stock, Shares Authorized								1,000,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	738,000	1,800,000	2,100,000	179,336
Stock Repurchase Program, Authorized Amount (in Dollars)					$ 5,000,000
Stock Repurchased During Period, Value (in Dollars)						$ 661,000
Stock Repurchased During Period, Shares						146,015