XML 98 R84.htm IDEA: XBRL DOCUMENT v3.20.4
Stock Options and Restricted Stock - Additional Information (Detail) - USD ($)
12 Months Ended
Jun. 15, 2018
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Mar. 01, 2016
Feb. 29, 2016
Jun. 16, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Stock option outstanding   951,669 [1] 550,040 144,666 320,626      
Stock option exercisable   178,307 [1] 62,778 81,889        
Unvested shares of common stock outstanding   773,362 487,262          
Weighted average fair value of options granted   $ 6.24            
Intrinsic value of options vested   $ 45,000 $ 43,000 $ 32,000        
Restricted Stock Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares outstanding   62,780            
Number of shares, granted   47,156 26,040 0        
Restricted Stock Units [Member] | Vest on June 19, 2021 [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares outstanding   47,156            
Number of shares, granted   47,156            
Vesting period   1 year            
Exercise price for grant per share   $ 3.16            
Number of shares vested with deferred settlement   16,524            
Number of shares vested and settled   10,416            
Restricted Shares [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares outstanding   416,140 [2] 284,879 190,915 408,582      
Weighted average fair value of options granted   $ 3.09 $ 3.10 $ 1.06        
Number of shares, granted   229,408 216,148 101,010        
Exercise price for grant per share   $ 6.21 $ 6.59 $ 4.41        
Number of shares vested and settled [3]   89,392 118,238 308,940        
2018 Equity Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant 241,919 2,210,968            
Shares were rolled into the 2018 Plan   862,069            
2015 Restricted Stock Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant           700,000    
Unvested shares of common stock outstanding   416,140            
2006 Stock Option Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Issuance of maximum number of shares approved               800,000
Number of additional shares available for issuance   0            
2006 Stock Option Plan [Member] | Maximum [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share based compensation, options term   10 years            
2015 Director Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant 258,334           300,000  
2015 Director Plan [Member] | Non Employee Director One [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant 12,000              
2015 Director Plan [Member] | Maximum [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share based compensation, options term 10 years              
Amended Director Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant   200,000            
Number of additional shares available for issuance   0            
Amended Director Plan [Member] | Director [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares available for grant   9,000            
Amended Director Plan [Member] | Maximum [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share based compensation, options term   10 years            
[1] The aggregate intrinsic value, which represents the difference between the price of the Company’s common stock at December 31, 2020 and the related exercise price of the underlying options, was $45,000 for outstanding options and $43,000 for exercisable options as of December 31, 2020. The remaining contractual life was 8.60 years for outstanding options and 7.23 years for exercisable options at December 31, 2020.
[2] The aggregate fair value of the restricted stock was $2,039,000 as of December 31, 2020. The remaining vesting period was 2.03 years at December 31, 2020.
[3] The aggregate fair value of the restricted stock vested was $579,000, $736,000, and $1,270,000 for 2020, 2019, and 2018.