COMMON STOCK, TREASURY STIOCK, PREFERRED STOCK AND COMMON STOCK PURCHASE WARRANTS - Additional Information (Detail) (USD $)	0 Months Ended		1 Months Ended	12 Months Ended				12 Months Ended	0 Months Ended				1 Months Ended		12 Months Ended	1 Months Ended				1 Months Ended
	Apr. 13, 2012	Jan. 13, 2012	Jan. 24, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 09, 2009	Dec. 31, 2011 Common Stock	Apr. 14, 2010 IPO	Sep. 09, 2009 IPO	Apr. 14, 2010 Underwriters	Sep. 09, 2009 Underwriters	Oct. 31, 2008 Private Placement	Oct. 31, 2008 Series B Warrants	Dec. 31, 2013 Series B Warrants Private Placement	Oct. 31, 2008 Series A Preferred Stock Private Placement	Oct. 31, 2008 Series A Warrants	Oct. 31, 2008 Series A Warrants Maximum	Oct. 31, 2008 Broadband Capital Management, Llc Series B Warrants	Oct. 31, 2008 Penumbra Worldwide Ltd Series B Warrants
Class Of Warrant Or Right [Line Items]
Warrants exercise price				3.50		3.50											3.50		3.50	3.50
Stock issued during period, shares, new issues									4,285,715		559,006
Equity issuance, per share amount									$ 8.05
Proceeds from issuance of common stock									$ 32,100,000
Share repurchase program authorized amount			15,000,000
Repurchase of common stock (in shares)								264,047
Repurchase of common stock						2,126,597		0
Temporary equity, redemption price per share						$ 8.05											$ 0.01
Dividends Payable, Current						992,846
Dividends	494,089	498,757
Proceeds of the private placement (net of fees and expenses)													13,656,538
Number of shares issued on cashless exercise of warrants				73,696		108,855				138,000							1,500,000		250,000	250,000
Stock and warrants issued during period, value, preferred stock and warrants													1,500,000			6,818,182
Convertible preferred stock, shares issued upon conversion							6,818,182
Class of warrant or rights period from which warrants or rights exercisable																	5 years			5 years
Conversion restriction, number of shares owned percntage than issued and outstanding																		9.90%
Warrants redemption percentage																		9.90%
Description on weighted average price of our common stock																	The daily volume weighted average price of our Common Stock is above $8.87 for 30 consecutive trading days ending on the date of the notice of redemption.
Description on average trading volume in shares														The average trading volume of Common Stock exceeds 100,000 shares for the immediately preceding 30 trading days.			300,000 shares per day.
Proceeds from exercise of warrants				95,441	0	1,898,050									539,910
Allocation of proceeds to beneficial conversion feature				1,002,115
Fair value of common stock on commitment date				$ 2.26
Sale of stock number of additional shares exercised										300,000
Offering price										$ 4.00
Proceeds from issuance initial public offering										$ 7,864,000
Common stock strike price per share										$ 4.80
Sale of stock, number of shares issued in transaction												2,000,000