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STOCKHOLDERS' EQUITY (Tables)
6 Months Ended
Jun. 30, 2019
Equity [Abstract]  
Schedule of Common Stock [Table Text Block]
 
Three Months Ended
 
Six Months Ended
(In thousands)
June 30,
2019
 
June 30,
2018
 
June 30,
2019
 
June 30,
2018
Beginning balance
29,110

 
29,630

 
28,889

 
29,782

Common stock issued under employee stock plans
220

 
225

 
562

 
571

Repurchased

 
(434
)
 
(121
)
 
(932
)
Ending balance
29,330

 
29,421

 
29,330

 
29,421


Dividends Declared and Paid [Table Text Block]
 
Three Months Ended
 
Six Months Ended
(In thousands, except per share amounts)
June 30,
2019
 
June 30,
2018
 
June 30,
2019
 
June 30,
2018
Dividends declared and paid
$
4,980

 
$
4,705

 
$
9,917

 
$
9,480

Dividends declared per common share
$
0.17

 
$
0.16

 
$
0.34

 
$
0.32