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Shareholders' Equity
9 Months Ended
Sep. 30, 2018
Equity [Abstract]  
Shareholders' Equity
Shareholders’ Equity
A summary of changes in shareholders’ equity is presented below:
 
 
Common
Stock
 
Additional
Paid-In
Capital
 
Retained
Earnings
 
Treasury
Stock
 
Deferred
Compensation
Trust
 
Deferred
Compensation
Liability
 
Total
Balance, December 31, 2017
 
$
206

 
$
1,644,197

 
$
6,231,940

 
$
(6,270,851
)
 
$
(17,383
)
 
$
17,383

 
$
1,605,492

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Cumulative-effect adjustment from adoption of ASU 2014-09, net of tax
 

 

 
2,196

 

 

 

 
2,196

Net income
 

 

 
565,039

 

 

 

 
565,039

Deferred compensation activity, net
 

 

 

 

 
455

 
(455
)
 

Purchase of common stock for treasury
 

 

 

 
(657,369
)
 

 

 
(657,369
)
Equity-based compensation
 

 
51,690

 

 

 

 

 
51,690

Proceeds from Options exercised
 

 
115,268

 

 

 

 

 
115,268

Treasury stock issued upon option exercise and restricted share vesting
 

 
(48,832
)
 

 
48,832

 

 

 

Balance, September 30, 2018
 
$
206

 
$
1,762,323

 
$
6,799,175

 
$
(6,879,388
)
 
$
(16,928
)
 
$
16,928

 
$
1,682,316


The Company repurchased approximately 222 shares of its common stock during the nine months ended September 30, 2018. The Company settles Option exercises and vesting of RSUs by issuing shares of treasury stock.  Approximately 126 shares were issued from the treasury account during the nine months ended September 30, 2018 in settlement of Option exercises and vesting of RSUs.  Shares are relieved from the treasury account based on the weighted average cost basis of treasury shares acquired.