Recently Issued Accounting Pronouncements	9 Months Ended
	Oct. 31, 2020
Accounting Changes and Error Corrections [Abstract]
Recently Issued Accounting Pronouncements	Recently Issued Accounting PronouncementsIn August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to Disclosure Requirements for Fair Value Measurement, which modifies the disclosure requirements for fair value investments. The amendments are effective for all entities for annual and interim periods in fiscal years beginning after December 15, 2019. This ASU did not have a material impact on the Company's condensed consolidated financial statements for the thirteen and thirty-nine week periods ended October 31, 2020.