XML 41 R26.htm IDEA: XBRL DOCUMENT v3.8.0.1
Incentive Plans (Tables)
 12 Months Ended
Dec. 31, 2017
Postemployment Benefits [Abstract]  
Options Before Adjustment to Option Price to Give Effect to Dilutive Equivalent Rights

Information with respect to these options, before adjustment to the option price to give effect to the dividend equivalent rights, is summarized as follows:

 

Outstanding Options

 

Number

of Shares

 

 

Exercise

Weighted-

Average Price

 

 

Grant Price Range

(High-Low)

 

Balance, January 1, 2015

 

 

36,000

 

 

$

35.94

 

 

$34.90/$36.53

 

Exercised

 

 

(13,000

)

 

 

34.90

 

 

$34.90/$34.90

 

Balance, January 1, 2016

 

 

23,000

 

 

$

36.53

 

 

$36.53/$36.53

 

Exercised

 

 

(23,000

)

 

 

36.53

 

 

$36.53/$36.53

 

Balance, January 1, 2017

 

 

—

 

 

 

—

 

 

 

—

 

Exercised

 

 

—

 

 

 

—

 

 

 

—

 

Outstanding options vested and exercisable as of

   December 31, 2017

 

 

—

 

 

 

—

 

 

 

—