XML 40 R68.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Note 9 - Stockholders' Equity - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Outstanding, Number of shares (in shares) [1] 702,817    
Outstanding, Weighted average exercise price (in dollars per share) $ 19.88    
Outstanding, Weighted average remaining contractual term (Year) 3 years 182 days [2] 4 years 109 days  
Outstanding, Aggregate intrinsic value $ 4,718 [2] $ 2,708  
Granted, Number of shares (in shares) 0 0 0
Exercised, Number of shares (in shares) [1] (54,834)    
Exercised, Weighted average exercise price (in dollars per share) $ 16.71    
Forfeited or expired, Number of shares (in shares) [1] (5,730)    
Forfeited or expired, Weighted average exercise price (in dollars per share) $ 20.08    
Outstanding, Number of shares (in shares) [1] 642,253 [2] 702,817  
Outstanding, Weighted average exercise price (in dollars per share) $ 20.14 [2] $ 19.88  
Exercisable, Number of shares (in shares) [1],[3] 616,253    
Exercisable, Weighted average exercise price (in dollars per share) [3] $ 19.80    
Exercisable, Weighted average remaining contractual term (Year) [3] 3 years 146 days    
Exercisable, Aggregate intrinsic value [3] $ 4,718    
[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 596,877 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 570,877 shares of the Company's common stock issuable upon exercise.