Stockholders Equity (Details) - 2017 Plan [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Total restricted stock and stock option programs	$ 418	$ 835	$ 1,025	$ 1,245
Total income tax benefit recognized for stock-based compensation arrangements	$ 108	$ 175	$ 266	$ 262