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Discontinued Operations (Tables)
12 Months Ended
Dec. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]  
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures
Results of discontinued operations are summarized as follows:
 
 
Year ended December 31,
 
 
2012
 
2011
 
2010
 
 
(dollars in thousands)
Net sales
 
$

 
$
45,480

 
$
40,850

Income from discontinued operations, before income taxes
 
$

 
$
14,600

 
$
10,290

Income tax expense
 

 
(5,050
)
 
(3,950
)
Income from discontinued operations, net of income taxes
 
$

 
$
9,550

 
$
6,340