Stockholders Equity (Details) - 2017 Plan [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Total restricted stock and stock option programs	$ 384	$ 271	$ 608	$ 790
Total income tax benefit recognized for stock-based compensation arrangements	$ 81	$ 70	$ 158	$ 166