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STOCKHOLDERS' EQUITY (Tables)
 6 Months Ended
Jun. 30, 2020
Equity [Abstract]  
Schedule of Common Stock [Table Text Block]
Three Months EndedSix Months Ended
(In thousands)June 30,
2020		June 30,
2019		June 30,
2020		June 30,
2019
Beginning balance29,691  29,110  29,431  28,889  
Common stock issued under employee stock plans193  220  477  562  
Repurchased(8) —  (32) (121) 
Ending balance29,876  29,330  29,876  29,330  
Dividends Declared and Paid [Table Text Block]
Three Months EndedSix Months Ended
(In thousands, except per share amounts)June 30,
2020		June 30,
2019		June 30,
2020		June 30,
2019
Dividends declared and paid$6,271  $4,980  $11,915  $9,917  
Dividends declared per common share$0.21  $0.17  $0.40  $0.34