Condensed Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Preferred Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Deficit	Accumulated Other Comprehensive Loss
Beginning balances (in shares) at Jan. 31, 2019		14,049	830
Beginning balances at Jan. 31, 2019	$ 56,678	$ 140	$ 18,330	$ 123,085	$ (16,860)	$ (63,973)	$ (4,044)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,415)					(2,415)
Foreign currency translation	(450)						(450)
Stock offering (in shares)			17
Stock offering	409		$ 409
Preferred stock dividends	(471)					(471)
Stock-based compensation	172			172
Ending balances (in shares) at Apr. 30, 2019		14,049	847
Ending balances at Apr. 30, 2019	53,923	$ 140	$ 18,739	123,257	(16,860)	(66,859)	(4,494)
Beginning balances (in shares) at Jan. 31, 2019		14,049	830
Beginning balances at Jan. 31, 2019	56,678	$ 140	$ 18,330	123,085	(16,860)	(63,973)	(4,044)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(7,579)
Ending balances (in shares) at Oct. 31, 2019		14,097	928
Ending balances at Oct. 31, 2019	50,078	$ 141	$ 20,540	123,722	(16,860)	(73,045)	(4,420)
Beginning balances (in shares) at Apr. 30, 2019		14,049	847
Beginning balances at Apr. 30, 2019	53,923	$ 140	$ 18,739	123,257	(16,860)	(66,859)	(4,494)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,137)					(3,137)
Foreign currency translation	(41)						(41)
Equity Compensation (in shares)		9
Equity Compensation	26	$ 1		25
Stock offering (in shares)			70
Stock offering	1,571		$ 1,571
Preferred stock dividends	(499)					(499)
Stock-based compensation	170			170
Ending balances (in shares) at Jul. 31, 2019		14,058	917
Ending balances at Jul. 31, 2019	52,013	$ 141	$ 20,310	123,452	(16,860)	(70,495)	(4,535)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,028)					(2,028)
Foreign currency translation	115						115
Restricted stock issued (in shares)		39
Stock offering (in shares)			11
Stock offering	230		$ 230
Preferred stock dividends	(522)					(522)
Stock-based compensation	270			270
Ending balances (in shares) at Oct. 31, 2019		14,097	928
Ending balances at Oct. 31, 2019	50,078	$ 141	$ 20,540	123,722	(16,860)	(73,045)	(4,420)
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, 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	(16,836)
Ending balances (in shares) at Oct. 31, 2020		14,773	994
Ending balances at Oct. 31, 2020	30,954	$ 148	$ 22,104	125,810	(16,860)	(95,823)	(4,425)
Beginning balances (in shares) at Apr. 30, 2020		14,097	994
Beginning balances at Apr. 30, 2020	40,550	$ 141	$ 22,104	124,194	(16,860)	(84,511)	(4,518)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,604)					(6,604)
Foreign currency translation	82						82
Preferred stock dividends	(559)					(559)
Stock-based compensation	219			219
Ending balances (in shares) at Jul. 31, 2020		14,097	994
Ending balances at Jul. 31, 2020	33,688	$ 141	$ 22,104	124,413	(16,860)	(91,674)	(4,436)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,590)					(3,590)
Foreign currency translation	11						11
Stock offering (in shares)		676
Stock offering	1,291	$ 7		1,284
Preferred stock dividends	(559)					(559)
Stock-based compensation	113			113
Ending balances (in shares) at Oct. 31, 2020		14,773	994
Ending balances at Oct. 31, 2020	$ 30,954	$ 148	$ 22,104	$ 125,810	$ (16,860)	$ (95,823)	$ (4,425)