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Investments Investments (Tables)
 6 Months Ended
Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]  
Investments schedule [Table Text Block]
 
 
(in thousands)
June 30,
2015
 
December 31,
2014
Rabbi trust (associated with the Deferred Compensation Plan)
$
3,649

 
$
3,678

Investments in equity securities
16

 
—

Total
$
3,665

 
$
3,678