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Income Taxes (Tables) | 9 Months Ended
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Oct. 31, 2021
Income Tax Disclosure [Abstract] |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] | A reconciliation of the beginning and ending amount of unrecognized tax benefits, including interest and penalties, is as follows (amounts in thousands):
|  | Nine Months Ended October 31, |
|  | 2021 |  |  | 2020 |
Unrecognized tax benefits, beginning of period |  | $ | 8,400 |  |  | $ | 7,370 |
Changes for prior years’ tax positions |  |  | 15 |  |  |  | (57) |
Changes for current year tax positions |  |  | 413 |  |  |  | - |
Unrecognized tax benefits, end of period |  | $ | 8,828 |  |  | $ | 7,313 |

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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=124434304&loc=d3e36027-109320 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319 + Details
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