Note 11 - Equity and Stock-Based Compensation (Details Textual)		3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 04, 2024 USD ($) shares	Jul. 31, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jan. 31, 2025	Aug. 29, 2024 $ / shares
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares							$ 1
Preferred Stock, Convertible, Conversion Ratio							3.9
Treasury Stock Reissued at Lower than Repurchase Price, Conversion of Convertible Securities	$ 14,800,000
Share-Based Payment Arrangement, Expense		$ 281,000	$ 46,000	$ 553,000	$ 95,000
Conversion of Series A Preferred Stock Into Common Stock [Member]
Conversion of Stock, Shares Issued (in shares) | shares	6,600,000
Series A Preferred Stock [Member]
Preferred Stock, Dividend Rate, Percentage						9.00%