XML 67 R55.htm IDEA: XBRL DOCUMENT v3.20.4
(7) Shareholders’ Equity (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Class of Stock [Line Items]      
Weighted average exercise price of stock options granted per share $ 1.33 $ 1.11 $ 1.06
Voliatility assumptions, minimum 72.00% 37.00% 31.00%
Voliatility assumptions, maximum 80.00% 39.00% 34.00%
Stock-based compensation expense $ 1,935 $ 2,072 $ 3,515
Unrecognized stock-based compensation costs $ 3,200    
Weighted-average period for unrecognized costs 2 years 2 months 12 days    
Intrinsic value options outstanding $ 11,900 4,800  
Intrinsic value of options exercisable 8,200 4,800  
Intrinsic value of options exercised 1,000 $ 1,400  
Proceeds from options exercised $ 949    
Authorizations prior to December 31, 2015 [Member]      
Class of Stock [Line Items]      
Options authorized under plan 19,200,000    
Shares available for grant 270,000    
Common Stock [Member]      
Class of Stock [Line Items]      
Stock repurchase program, total shares authorized to be repurchased $ 10,000    
Amount remaining of stock repurchase authorized amount $ 5,100    
Common Stock [Member]      
Class of Stock [Line Items]      
Repurchase of common stock, shares 351,926 378,470  
Average price per share of common stock repurchased (in dollars per share) $ 3.45 $ 3.97