Fair value	9 Months Ended
Fair value	Oct. 31, 2020
Fair Value Disclosures [Abstract]
Fair value	Fair value Fair value measurements are made at a specific point in time, based on relevant market information. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. Accounting standards specify a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs have created the following fair value hierarchy: •Level 1—quoted prices in active markets for identical assets or liabilities; •Level 2—inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and •Level 3—unobservable inputs based on the Company’s own assumptions. Level 1 instruments are valued based on publicly available daily net asset values. Level 1 instruments consist primarily of cash and cash equivalents. The carrying value of cash and cash equivalents approximate fair values as of October 31, 2020 due to the short-term nature of these instruments. Our long-term debt is considered a Level 2 instrument and is recorded at book value in our condensed consolidated financial statements. Our long-term debt reprices frequently due to variable interest rate terms and entails no significant changes in credit risk. As a result, we believe the fair value of our long-term debt approximates carrying value.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.