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Other Comprehensive Income (Notes)
 3 Months Ended
Mar. 31, 2014
Other Comprehensive Income [Abstract]  
Comprehensive Income (Loss) Note [Text Block]
14. Other Comprehensive Income
Changes in AOCI by component for the three months ended March 31, 2015 are summarized as follows:
 
 
Defined Benefit Plans
 
 Derivative Instruments
 
Foreign Currency Translation
 
Total
 
 
(dollars in thousands)
Balance, December 31, 2014
 
$
(14,180
)
 
$
610

 
$
23,790

 
$
10,220

Net unrealized (losses) arising during the period (a)
 
—

 
(710
)
 
(6,540
)
 
(7,250
)
Less: Net realized (losses) reclassified to net income (b)
 
(250
)
 
(320
)
 
—

 
(570
)
Net current-period change
 
250

 
(390
)
 
(6,540
)
 
(6,680
)
Balance, March 31, 2015
 
$
(13,930
)
 
$
220

 
$
17,250

 
$
3,540


__________________________
(a) Derivative instruments, net of income tax of $0.3 million. See Note 8, "Derivative Instruments," for further details.
(b) Defined benefit plans, net of income tax of $0.1 million. See Note 13, "Defined Benefit Plans," for additional details. Derivative instruments, net of income tax of $0.1 million. See Note 8, "Derivative Instruments," for further details.
Changes in AOCI by component for the three months ended March 31, 2014 are summarized as follows:
 
 
Defined Benefit Plans
 
 Derivative Instruments
 
Foreign Currency Translation
 
Total
 
 
(dollars in thousands)
Balance, December 31, 2013
 
$
(10,840
)
 
$
1,060

 
$
37,610

 
$
27,830

Net unrealized gains arising during the period (a)
 
—

 
200

 
1,880

 
2,080

Less: Net realized (losses) reclassified to net income (b)
 
(180
)
 
(110
)
 
—

 
(290
)
Net current-period change
 
180

 
310

 
1,880

 
2,370

Balance, March 31, 2014
 
$
(10,660
)
 
$
1,370

 
$
39,490

 
$
30,200

__________________________
(a) Derivative instruments, net of income tax of $0.1 million. See Note 8, "Derivative Instruments," for further details.
(b) Defined benefit plans, net of income tax of $0.1 million. See Note 13, "Defined Benefit Plans," for additional details. Derivative instruments, net of income tax of $0.1 million. See Note 8, "Derivative Instruments," for further details.