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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2011
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
(Dollars in thousands)
 
 
 
2012
$
2,900

2013
2,267

2014
1,787

2015
1,330

2016
1,024

2017 and thereafter
485

Total
$
9,793