Segment Reporting (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Fire [Member]
External sales	$ 2,520	$ 1,670	$ 4,420	$ 3,120
Disposables [Member]
External sales	15,190	23,780	34,890	54,990
Chemical [Member]
External sales	5,600	6,190	13,860	15,070
Gloves [Member]
External sales	1,700	540	3,320	1,320
High Visibility [Member]
External sales	590	950	1,040	2,300
High Performance Wear [Member]
External sales	1,010	530	1,870	820
Wovens [Member]
External sales	860	1,360	2,160	2,980
Total [Member]
External sales	$ 27,470	$ 35,020	$ 61,560	$ 80,600