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(Loss) Earnings Attributable to Tennant Company Per Share
 6 Months Ended
Jun. 30, 2017
Earnings Per Share [Abstract]  
(Loss) Earnings Attributable to Tennant Company Per Share
18.
(Loss) Earnings Attributable to Tennant Company Per Share
The computations of Basic and Diluted (Loss) Earnings Attributable to Tennant Company per Share were as follows:
 
Three Months Ended
 
Six Months Ended
 
June 30
 
June 30
 
2017
 
2016
 
2017
 
2016
Numerator:
 
 
 
 
 
 
 
Net (Loss) Earnings Attributable to Tennant Company
$
(2,591
)
 
$
15,328

 
$
(6,548
)
 
$
19,767

Denominator:
 
 
 
 
 
 
 
Basic - Weighted Average Shares Outstanding
17,693,102

 
17,508,022

 
17,645,090

 
17,526,107

Effect of Dilutive Securities:
 
 
 
 
 
 
 
Share-Based Compensation Plans
—

 
425,221

 
—

 
428,060

Diluted - Weighted Average Shares Outstanding
17,693,102

 
17,933,243

 
17,645,090

 
17,954,167

Basic (Loss) Earnings per Share
$
(0.15
)
 
$
0.88

 
$
(0.37
)
 
$
1.13

Diluted (Loss) Earnings per Share
$
(0.15
)
 
$
0.85

 
$
(0.37
)
 
$
1.10

 
Excluded from the dilutive securities shown above were options to purchase 735,377 and 408,979 shares of Common Stock during the three months ended June 30, 2017 and 2016, respectively. Excluded from the dilutive securities shown above were options to purchase 716,401 and 405,123 shares of Common Stock during the six months ended June 30, 2017 and 2016, respectively. These exclusions were made if the exercise prices of the options are greater than the average market price of our Common Stock for the period, if the number of shares we can repurchase under the treasury stock method exceeds the weighted average shares outstanding in the options or if we have a net loss, as these effects are anti-dilutive.