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Debt - Letters of Credit (Details) (Letter of Credit [Member], USD $)
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May 02, 2015
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Jan. 31, 2015
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|---|---|---|
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Trade LCs [Member]
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| Debt Instrument [Line Items] | ||
| Letters of credit outstanding | $ 0 | $ 0 |
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Stand-by LCs [Member]
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| Debt Instrument [Line Items] | ||
| Letters of credit outstanding | $ 2,500,000 | $ 2,500,000 |