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Stockholders Equity
 3 Months Ended
Mar. 31, 2020
Equity [Abstract]  
Stockholders Equity Stockholders' Equity

A schedule of consolidated changes in equity for the three months ended March 31, 2020 is as follows (shares in thousands):
 
 
Common
Stock
(Number of
Shares)
 
Common
Stock
(Amount)
 
Additional
Paid-In
Capital
 
Treasury
Stock
(Number of
Shares)
 
Treasury
Stock (Amount)
 
Retained
Earnings
 
Accumulated
Other
Non-Owner
Changes to
Equity
 
Total
Stockholders’
Equity
December 31, 2019
 
63,873

 
$
639

 
$
489,282

 
13,051

 
$
(498,074
)
 
$
1,489,176

 
$
(210,495
)
 
$
1,270,528

Comprehensive income
 
—

 
—

 
—

 
—

 
—

 
29,733

 
(34,189
)
 
(4,456
)
Dividends declared ($0.16 per share)
 
—

 
—

 
—

 
—

 
—

 
(8,133
)
 
—

 
(8,133
)
Common stock repurchases
 
—

 
—

 
—

 
396

 
(15,550
)
 
—

 
—

 
(15,550
)
Employee stock plans
 
17

 
—

 
2,743

 
2

 
(84
)
 
(88
)
 
—

 
2,571

March 31, 2020
 
63,890

 
$
639

 
$
492,025

 
13,449

 
$
(513,708
)
 
$
1,510,688

 
$
(244,684
)
 
$
1,244,960


A schedule of consolidated changes in equity for the three months ended March 31, 2019 is as follows (shares in thousands):
 
 
Common
Stock
(Number of
Shares)
 
Common
Stock
(Amount)
 
Additional
Paid-In
Capital
 
Treasury
Stock
(Number of
Shares)
 
Treasury
Stock (Amount)
 
Retained
Earnings
 
Accumulated
Other
Non-Owner
Changes to
Equity
 
Total
Stockholders’
Equity
December 31, 2018
 
63,367

 
$
634

 
$
470,818

 
12,034

 
$
(441,668
)
 
$
1,363,772

 
$
(190,500
)
 
$
1,203,056

Comprehensive income
 
—

 
—

 
—

 
—

 
—

 
33,992

 
(8,178
)
 
25,814

Dividends declared ($0.16 per share)
 
—

 
—

 
—

 
—

 
—

 
(8,217
)
 
—

 
(8,217
)
Employee stock plans
 
51

 
—

 
4,039

 
1

 
(80
)
 
(109
)
 
—

 
3,850

March 31, 2019
 
63,418

 
$
634

 
$
474,857

 
12,035

 
$
(441,748
)
 
$
1,389,438

 
$
(198,678
)
 
$
1,224,503