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Investment in Unconsolidated Joint Venture - Narrative (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Apr. 30, 2017	Apr. 30, 2017	Jan. 01, 2017
Schedule of Equity Method Investments [Line Items]
Loss from equity method investments	$ (23,000)	$ (23,000)
CLIH [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	50.00%	50.00%	50.00%
Unconsolidated joint venture, net loss		$ (46,000)
Loss from equity method investments		$ (23,000)

X

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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-Publisher FASB
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This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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