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Note 7 - EMPLOYEE BENEFIT PLANS - Stock Options Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 6 Months Ended
Jun. 30, 2022
EMPLOYEE BENEFIT PLANS  
Outstanding, beginning balance (in shares) 226
Exercised (in shares) (87)
Canceled (in shares) (4)
Expired (in shares) (2)
Outstanding, ending balance (in shares) 133
Vested and expected to vest (in shares) 133
Exercisable (in shares) 112
Outstanding, weighted average exercise price, beginning balance (in dollars per share) $ 12.78
Exercised, weighted average exercise price (in dollars per share) 9.10
Canceled, weighted average exercise price (in dollars per share) 13.30
Expired, weighted average exercise price (in dollars per share) 8.79
Outstanding, weighted average exercise price, ending balance (in dollars per share) 15.19
Vested and expected to vest, weighted average exercise price (in dollars per share) 15.18
Exercisable, weighted average exercise price (in dollars per share) $ 15.16
Outstanding, weighted average remaining contractual (Year) 3 years 9 months 18 days
Vested and expected to vest, weighted average remaining contractual term (Year) 3 years 9 months 10 days
Exercisable, weighted average remaining contractual term (Year) 3 years 2 months 19 days
Outstanding, aggregate intrinsic value $ 848
Vested and expected to vest, aggregate intrinsic value 843
Exercisable, aggregate intrinsic value $ 714