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Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2018	Jul. 31, 2017	Jul. 31, 2018	Jul. 31, 2017	Jan. 31, 2018
Income Tax Disclosure [Abstract]
Corporate income tax rate	21.00%	35.00%	21.00%	35.00%	35.00%
Provision for income tax expense	$ 3,615,000	$ 2,574,000	$ 3,474,000	$ 2,851,000
Effective tax rate for continuing operations	28.30%	32.00%	16.80%	68.30%
Income tax benefit from foreign operations			$ 0	$ 0

X

- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations.

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