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Commitments and Contingent Liabilities (Tables)
12 Months Ended
Dec. 31, 2011
Commitments and Contingent Liabilities [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
2012$ 16.4million
2013  13.2million
2014  11.4million
2015  6.5million
2016  6.1million
Thereafter  21.9million