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v3.22.2.2

Note 3 - Accounts Receivable (Details Textual) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 31, 2022 USD ($) | Jul. 31, 2021 | Jul. 31, 2022 USD ($) | Jul. 31, 2021 | Jan. 31, 2022 USD ($)
Accounts Receivable, Outstanding for Several Years | $ 2,700 |  | $ 2,700 |  | $ 3,600
Retention Receivable, Settlement Amount | 900 |  |  |  |
Allowance for Doubtful Accounts Receivable Outstanding for Several Years | $ 0 |  | $ 0 |  |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Number of Major Customers | 0 | 1 | 0 | 0 |
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member] |  |  |  |  |
Concentration Risk, Percentage |  | 12.00% |  |  |
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |  |  |
Number of Major Customers |  |  | 0 |  | 1
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Customer [Member] |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  | 11.90%
Other Noncurrent Assets [Member] |  |  |  |  |
Retention Receivable | $ 1,100 |  | $ 1,100 |  | $ 2,000

X
- Definition Represents the amount of accounts receivable, inclusive of retention receivables, that have been outstanding for several years as of the balance sheet date. + References No definition available. + Details
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X
- Definition Represents the balance of the allowance for doubtful accounts pertaining to accounts receivable outstanding for several years. + References No definition available. + Details
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X
- Definition Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc. + References No definition available. + Details
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X
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X
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X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
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