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Retirement Plans (Tables)
3 Months Ended
Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]  
Schedule of Costs of Retirement Plans [Table Text Block]
The following tables provide the components of net periodic pension benefit cost and other post-retirement benefit cost (in thousands):
 
 
 
Pension Benefits
 
Other Benefits
 
 
 
Three Months Ended
March 31,
 
Three Months Ended
March 31,
 
 
 
2014
 
2013
 
2014
 
2013
 
Service cost
 
$
8
 
$
14
 
$
2
 
$
-
 
Interest cost
 
 
2,740
 
 
2,553
 
 
175
 
 
135
 
Expected return on plan assets (a)
 
 
(3,252)
 
 
(3,098)
 
 
-
 
 
-
 
Prior service cost amortization
 
 
(24)
 
 
 
 
 
33
 
 
 
 
Net periodic benefit cost / (income)
 
$
(528)
 
$
(531)
 
$
210
 
$
135
 
 
(a)
Expected rate of return on plan assets is 7.40% for 2014 and was 7.40% for 2013