Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Preferred Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Loss	Common Stock Including Additional Paid-In Capital
Beginning balances (in shares) at Jan. 31, 2020		14,097	994
Beginning balances at Jan. 31, 2020	$ 47,652	$ 141	$ 22,104	$ 123,964	$ (16,860)	$ (77,310)	$ (4,387)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,642)					(6,642)
Foreign currency translation	(131)						(131)
Preferred stock dividends	(559)					(559)
Stock-based compensation	230			230
Ending balances (in shares) at Apr. 30, 2020		14,097	994
Ending balances at Apr. 30, 2020	40,550	$ 141	$ 22,104	124,194	(16,860)	(84,511)	(4,518)
Beginning balances (in shares) at Jan. 31, 2021		15,681	1,038
Beginning balances at Jan. 31, 2021	30,416	$ 157	$ 23,104	128,241	(16,860)	(99,870)	(4,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,984)					(3,984)
Foreign currency translation	57						57
Restricted stock issued (in shares)		5
Restricted stock issued	11			11
Restricted stock forfeited for taxes	(2)				(2)
Stock offering (in shares)		18	21
Stock offering			$ 503	42				$ 42
Preferred stock dividends	(584)					(584)
Stock-based compensation	109			109
Ending balances (in shares) at Apr. 30, 2021		15,704	1,059
Ending balances at Apr. 30, 2021	$ 26,568	$ 157	$ 23,607	$ 128,403	$ (16,862)	$ (104,438)	$ (4,299)