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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, 2020		15,713,549
Beginning balance at Jan. 31, 2020	$ 54,818	$ 157	$ 118,782	$ (49,810)	$ (14,311)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(4,698)			(4,698)
Pension adjustments, net of tax effect	345				345
Shares vested and others (shares)		0
Shares vested and others	0	$ 0	0
Stock compensation expense	$ 254		254
Ending balance (shares) at Apr. 30, 2020	15,713,549	15,713,549
Ending balance at Apr. 30, 2020	$ 50,719	$ 157	119,036	(54,508)	(13,966)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Pension adjustments, tax	$ 120
Beginning balance (shares) at Jan. 31, 2021	15,918,642	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 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

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