Income Taxes - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Oct. 31, 2016	Jan. 31, 2016
Income Tax Disclosure [Abstract]
Prepaid income taxes	$ 1,656,000	$ 2,523,000
Prepaid foreign taxes	1,500,000	2,300,000
Prepaid domestic federal and state taxes	195,000	182,000
Valuation allowance, deferred tax assets	$ 22,000,000	$ 16,700,000
Federal statutory rate	34.00%	34.00%
Unrecognized Tax Benefit	$ 0	$ 92,000
Reversed potential penalties and interest		$ 144,000