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Commitments, Contingencies and Guarantees (Tables)
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12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2013
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| Commitments and Contingencies Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||
| Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] | Minimum rental commitments for the rental of office and production premises and equipment under non-cancellable leases net of sublease income, some of which provide for rental adjustments due to increased property taxes and operating costs for 2012 and thereafter, are as follows:
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