Unaudited Consolidated Statements of Changes in Equity and Accumulated Other Comprehensive Income (Loss) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balance (shares) at Jan. 31, 2019		15,541,956
Beginning balance at Jan. 31, 2019	$ 57,027	$ 155	$ 118,106	$ (52,192)	$ (9,042)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(3,067)			(3,067)
Cash dividends	0			0
Pension adjustments, net of tax effect	130				130
Shares vested and others (shares)		0
Shares vested and others	0	$ 0	0
Stock compensation expense	$ 186		186
Ending balance (shares) at Apr. 30, 2019	15,541,956	15,541,956
Ending balance at Apr. 30, 2019	$ 54,276	$ 155	118,292	(55,259)	(8,912)
Beginning balance (shares) at Jan. 31, 2020	15,713,549	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 income (loss)	(4,698)			(4,698)
Cash dividends	0			0
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)