XML 61 R52.htm IDEA: XBRL DOCUMENT v3.22.1
Note 10 - Common Stock and Stock-based Compensation Plans - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Jan. 01, 2022
Outstanding, Number of shares (in shares) [1] 126,000    
Outstanding, Weighted average exercise price (in dollars per share) $ 20.06    
Outstanding, Weighted average remaining contractual term (Year) 2 years 4 months 24 days [2] 2 years 7 months 6 days  
Outstanding, Aggregated intrinsic value $ 2,510 [2]   $ 2,921
Granted, Number of shares (in shares) [1] 0    
Exercised, Number of shares (in shares) [1] (4,000)    
Exercised, Weighted average exercise price (in dollars per share) $ 19.59    
Forfeited or expired, Number of shares (in shares) [1] 0    
Outstanding, Number of shares (in shares) [1] 122,000 [2] 126,000  
Outstanding, Weighted average exercise price (in dollars per share) $ 20.07 [2] $ 20.06  
Exercisable, Number of shares (in shares) [1],[3] 122,000    
Exercisable, Weighted average exercise price (in dollars per share) [3] $ 20.07    
Exercisable, Weighted average remaining contractual term (Year) [3] 2 years 4 months 24 days    
Exercisable, Aggregated intrinsic value [3] $ 2,510    
[1] The SAR units are convertible for a maximum number of shares of the Company's common stock equal to 75% of the SAR units subject to the grant.
[2] Due to the ceiling imposed on the SAR grants, the outstanding amount equals a maximum of 128,000 shares of the Company’s common stock issuable upon exercise.
[3] Due to the ceiling imposed on the SAR grants, the exercisable amount equals a maximum of 128,000 shares of the Company’s common stock issuable upon exercise.