Unaudited Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance (shares) at Jan. 31, 2021		15,918,642
Beginning balance at Jan. 31, 2021	$ 54,187	$ 159	$ 119,655	$ (52,042)	$ (13,585)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(3,909)			(3,909)
Pension adjustments, net of tax effect	327				327
Shares vested and others (shares)		0
Shares vested and others	0	$ 0	0
Stock compensation expense	$ 253		253
Ending balance (shares) at Apr. 30, 2021	15,918,642	15,918,642
Ending balance at Apr. 30, 2021	$ 50,858	$ 159	119,908	(55,951)	(13,258)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Pension adjustments, tax	$ 116
Beginning balance (shares) at Jan. 31, 2022	16,102,023	16,102,023
Beginning balance at Jan. 31, 2022	$ 47,446	$ 161	120,492	(67,178)	(6,029)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(5,084)			(5,084)
Pension adjustments, net of tax effect	135				135
Shares vested and others (shares)		0
Shares vested and others	0	$ 0	0
Stock compensation expense	$ 253		253
Ending balance (shares) at Apr. 30, 2022	16,102,023	16,102,023
Ending balance at Apr. 30, 2022	$ 42,750	$ 161	$ 120,745	$ (72,262)	$ (5,894)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Pension adjustments, tax	$ 0