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Commitments and Contingencies Re-insurance losses on claims on individual basis (Details) (USD $)
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12 Months Ended |
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Dec. 27, 2014
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| Commitments and Contingencies Disclosure [Abstract] | |
| Reinsurance Purchased For Stop Losses On Individual Basis | $ 155 |
| Reinsurance Purchased For Stop Losses on Aggregate Basis | $ 7,200 |