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Summary of Business and Significant Accounting Policies (Self-Insurance) (Details) - USD ($)	Jan. 31, 2017	Jan. 31, 2016
Loss Contingencies [Line Items]
Discount rate	2.00%	2.00%
Product and General Liability [Member]
Loss Contingencies [Line Items]
Self insurance reserve	$ 250,000
Workers Compensation [Member]
Loss Contingencies [Line Items]
Self insurance reserve	250,000
Automobile Losses [Member]
Loss Contingencies [Line Items]
Self insurance reserve	$ 50,000

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Assumed Discount Rate, Self Insurance Accrual

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- Definition

Self Insurance Coverage Amount

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