Note 3 - Retention	12 Months Ended
Jan. 31, 2022
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block]	Note 3 - Retention A retention receivable is a portion of an outstanding receivable balance amount withheld by a customer until a contract is fully completed as specified in the contractual agreement. Retention receivables of $2.9 million and $2.7 million were included in the balance of trade accounts receivable as of January 31, 2022 and 2021, respectively. A retention receivable of $4.3 million and $2.7 million was included in the balance of other long-term assets as of January 31, 2022 and 2021 due to the long-term nature of the receivables. See Note 2 - Accounts receivable for further information regarding the future realization of these long-term balances.

The entire disclosure for claims held for amounts due a company, excluding disclosure for allowance for credit losses. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Also excludes disclosure for financing receivables.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-URI http://asc.fasb.org/subtopic&trid=2196772

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