Income Taxes (Details) - USD ($)	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
Income Tax Contingency [Line Items]
Total unrecognized tax benefits that, if recognized, would affect the company's effective tax rate	$ 2,162,000	$ 2,183,000	$ 2,143,000
Accrued interest and penalties related to unrecognized tax benefits	430,000	$ 442,000	$ 418,000
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	0
Operating Loss Carryforwards	3,001,000
Deferred Tax Assets, Operating Loss Carryforwards	630,000
Operating Loss Carryforwards, Valuation Allowance	630,000
United States
Income Tax Contingency [Line Items]
Pre-tax book income, domestic	44,328,000
Foreign Tax Authority
Income Tax Contingency [Line Items]
Pre-tax book income, foreign	$ (4,294,000)