XML 15 R77.htm IDEA: XBRL DOCUMENT v3.19.3
Note 15 - Share-based Payments - Summary of Exercise Prices, Weighted Average Remaining Contractual Life and Intrinsic Values of Outstanding Options (Details)
$ / shares in Units, $ in Thousands
 9 Months Ended
Sep. 30, 2019
USD ($)
$ / shares
shares
Number outstanding (in shares) | shares 779,266
Weighted average exercise price per share, options outstanding (in dollars per share) $ 49.37
Aggregate intrinsic value, options outstanding | $ $ 6,447
Number exercisable (in shares) | shares 368,664
Weighted average exercise price per share, options exercisable (in dollars per share) $ 39.43
Weighted average remaining contractual life, options exercisable (Year) 3 years 146 days
Aggregate intrinsic value, options exercisable | $ $ 5,995
Exercise Price Range 01 [Member]  
Exercise price - lower (in dollars per share) $ 5.52
Exercise price - higher (in dollars per share) $ 8.56
Number outstanding (in shares) | shares 32,535
Weighted average exercise price per share, options outstanding (in dollars per share) $ 7.48
Aggregate intrinsic value, options outstanding | $ $ 1,519
Number exercisable (in shares) | shares 32,535
Weighted average exercise price per share, options exercisable (in dollars per share) $ 7.48
Weighted average remaining contractual life, options exercisable (Year) 182 days
Aggregate intrinsic value, options exercisable | $ $ 1,519
Exercise Price Range 02 [Member]  
Exercise price - lower (in dollars per share) $ 10.16
Exercise price - higher (in dollars per share) $ 19.95
Number outstanding (in shares) | shares 74,465
Weighted average exercise price per share, options outstanding (in dollars per share) $ 16.42
Aggregate intrinsic value, options outstanding | $ $ 2,811
Number exercisable (in shares) | shares 73,215
Weighted average exercise price per share, options exercisable (in dollars per share) $ 16.36
Weighted average remaining contractual life, options exercisable (Year) 2 years
Aggregate intrinsic value, options exercisable | $ $ 2,768
Exercise Price Range 03 [Member]  
Exercise price - lower (in dollars per share) $ 21.10
Exercise price - higher (in dollars per share) $ 27.53
Number outstanding (in shares) | shares 58,750
Weighted average exercise price per share, options outstanding (in dollars per share) $ 23.73
Aggregate intrinsic value, options outstanding | $ $ 1,788
Number exercisable (in shares) | shares 48,750
Weighted average exercise price per share, options exercisable (in dollars per share) $ 24.27
Weighted average remaining contractual life, options exercisable (Year) 2 years 36 days
Aggregate intrinsic value, options exercisable | $ $ 1,457
Exercise Price Range 04 [Member]  
Exercise price - lower (in dollars per share) $ 35.25
Exercise price - higher (in dollars per share) $ 37.35
Number outstanding (in shares) | shares 14,375
Weighted average exercise price per share, options outstanding (in dollars per share) $ 35.89
Aggregate intrinsic value, options outstanding | $ $ 263
Number exercisable (in shares) | shares 11,875
Weighted average exercise price per share, options exercisable (in dollars per share) $ 36.02
Weighted average remaining contractual life, options exercisable (Year) 3 years 182 days
Aggregate intrinsic value, options exercisable | $ $ 215
Exercise Price Range 05 [Member]  
Exercise price - lower (in dollars per share) $ 43.15
Exercise price - higher (in dollars per share) $ 47
Number outstanding (in shares) | shares 5,000
Weighted average exercise price per share, options outstanding (in dollars per share) $ 47
Aggregate intrinsic value, options outstanding | $ $ 36
Number exercisable (in shares) | shares 2,500
Weighted average exercise price per share, options exercisable (in dollars per share) $ 47
Weighted average remaining contractual life, options exercisable (Year) 4 years 182 days
Aggregate intrinsic value, options exercisable | $ $ 18
Exercise Price Range 06 [Member]  
Exercise price - lower (in dollars per share) $ 53.20
Exercise price - higher (in dollars per share) $ 58.65
Number outstanding (in shares) | shares 344,053
Weighted average exercise price per share, options outstanding (in dollars per share) $ 55.53
Aggregate intrinsic value, options outstanding | $ $ 30
Number exercisable (in shares) | shares 171,877
Weighted average exercise price per share, options exercisable (in dollars per share) $ 55.72
Weighted average remaining contractual life, options exercisable (Year) 4 years 255 days
Aggregate intrinsic value, options exercisable | $ $ 18
Exercise Price Range 07 [Member]  
Exercise price - lower (in dollars per share) $ 62.12
Exercise price - higher (in dollars per share) $ 64.10
Number outstanding (in shares) | shares 250,088
Weighted average exercise price per share, options outstanding (in dollars per share) $ 62.99
Aggregate intrinsic value, options outstanding | $
Number exercisable (in shares) | shares 27,912
Weighted average exercise price per share, options exercisable (in dollars per share) $ 64.10
Weighted average remaining contractual life, options exercisable (Year) 5 years 255 days
Aggregate intrinsic value, options exercisable | $