v2.4.0.8
Stockholders' Equity - Additional Information (Detail) (USD $)
3 Months Ended 12 Months Ended 36 Months Ended
Jun. 30, 2010
Dec. 31, 2013
Plans
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Preferred stock, shares authorized   10,000,000 10,000,000   10,000,000
Preferred stock, shares outstanding             
Common stock, shares authorized   40,000,000 40,000,000   40,000,000
Common stock, shares outstanding   14,184,000 14,184,000   14,184,000
Number of equity incentive plans   2      
Shares outstanding under equity incentive plans   893,000 643,000   893,000
Common stock authorized for issuance there-under   1,000,000     1,000,000
Common stock authorized for issuance additional   348,208      
Term of vesting schedule   10 years      
Vested share exercised   3 months      
Vesting of outstanding options   100.00%      
Period of option granted vest   3 years      
Fair value assumption, risk-free interest rates   1.81% 0.91% 0.63%  
Fair value assumption, expected dividend yields   0.00% 0.00% 0.00%  
Aggregate intrinsic value closing stock price   $ 1.53     $ 1.53
Equity ownership percentage to benefit China employees 38.00%        
Price of warrant 1.00        
Vesting period of warrant Vesting to occur one-third upon the first anniversary of the warrant and the remaining two-thirds to vest on a monthly basis over the succeeding 24 months.        
Investment warrants expiration period (years) 6 years        
Warrant Exercise Date May 05, 2013        
Fair value of options granted   $ 0.58 $ 0.54 $ 0.47  
Unrecognized compensation expense related to non-vested stock options   $ 137,000     $ 137,000
Recognition of unrecognized compensation expense, weighted-average period (in years)   1 year 10 months 24 days      
Fair value of options that vested   68,000 110,000 79,000  
Stock issued during period, stock options exercised   25,000     0
Hong Kong Subsidiary [Member]
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Value funded to affiliates 1,000,000        
Agreed additional funding to affiliates 1,000,000        
Estimated fair value of warrants   365,000     365,000
Warrant performance period (years)   3 years      
Stock expenses on equity-based payments related to warrant   $ 40,000 $ 122,000 $ 122,000  
Minimum [Member]
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Fair value assumption, expected volatility   102.00% 102.00% 102.00%  
Fair value assumption, expected term (years)   3 years 3 years 3 years  
Maximum [Member]
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Fair value assumption, expected volatility   109.00% 109.00% 109.00%  
Fair value assumption, expected term (years)   7 years 7 years 7 years  
2006 Equity Incentive Plan [Member]
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares outstanding under equity incentive plans   881,000     881,000
Shares available for grant under equity incentive plans   467,000     467,000
2003 Stock Option Plan [Member]
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares outstanding under equity incentive plans   12,000     12,000