Quarterly report pursuant to Section 13 or 15(d)

Summary of Option Activity (Detail)

v2.4.0.8
Summary of Option Activity (Detail) (USD $)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Number of Shares    
Beginning Balance 4,441,000  
Exercised (116,000)  
Forfeited, cancelled, or expired (244,000)  
Ending Balance 4,394,000 4,441,000
Options exercisable at March 31, 2014 2,666,000  
Vested options expired during the quarter ended March 31, 2014 85,000  
Weighted Average Exercise Price    
Beginning Balance $ 3.51  
Exercised $ 2.14  
Forfeited, cancelled, or expired $ 3.71  
Ending Balance $ 3.50 $ 3.51
Options exercisable at March 31, 2014 $ 3.50  
Vested options expired during the quarter ended March 31, 2014 $ 5.13  
Weighted Average Remaining Contractual Term (Years)    
Options outstanding 3 years 7 months 13 days 3 years 9 months 29 days
Options exercisable 2 years 10 months 28 days  
Aggregate Intrinsic Value    
Options outstanding $ 717,000 [1] $ 1,574,000 [1]
Options exercisable $ 678,000 [1]  
Granted at fair market value
    
Number of Shares    
Granted 23,000  
Weighted Average Exercise Price    
Granted $ 2.99  
Granted at above fair market value
    
Number of Shares    
Granted 290,000  
Weighted Average Exercise Price    
Granted $ 3.06  
[1] The intrinsic value calculation does not include negative values. This can occur when the fair market value on the reporting date is less than the exercise price of the grant.