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Equity Weighted Average Shares Outstanding (Tables)
9 Months Ended
Sep. 30, 2019
Equity [Abstract]  
Schedule of Weighted Average Number of Shares The following table sets forth, for the indicated periods, weighted averages of the number of common shares outstanding, basic and dilutive, the effect of dilutive options and the number of options which are not dilutive because the average price of the Company's common stock was less than the exercise prices. The treasury stock method was used to measure the effect of the dilution.
 
Three months ended September 30,
 
Nine months ended September 30,
(In thousands)
2019
 
2018
 
2019
 
2018
Weighted average common stock outstanding-Basic
23,081

 
22,432

 
22,947

 
22,290

Effect of dilutive options
40

 
69

 
46

 
46

Weighted average common stock outstanding-Diluted
23,121

 
22,501

 
22,993

 
22,336

Non-dilutive options
698

 
443

 
612

 
508

Years non-dilutive options were issued
2016, 2017 and 2019
 
2016 and 2017
 
2016, 2017 and 2019
 
2015, 2016 and 2017