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Subsequent Event (Detail) | 4 Months Ended
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Apr. 25, 2015
Subsequent Events [Abstract] |
Subsequent event, date | Apr. 27, 2015
Subsequent event, description | the Company entered into an asset purchase agreement with Dan’s Supermarket Inc., a six-store chain serving Bismarck and Mandan, North Dakota. The transaction is expected to close in June, 2015.

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