Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Preferred Stock Offerings [Member] Common Stock [Member]	Preferred Stock Offerings [Member] Preferred Stock [Member]	Preferred Stock Offerings [Member] Additional Paid-in Capital [Member]	Preferred Stock Offerings [Member] Treasury Stock [Member]	Preferred Stock Offerings [Member] Retained Earnings [Member]	Preferred Stock Offerings [Member] AOCI Attributable to Parent [Member]	Preferred Stock Offerings [Member]	Common Stock Offerings [Member] Common Stock [Member]	Common Stock Offerings [Member] Preferred Stock [Member]	Common Stock Offerings [Member] Additional Paid-in Capital [Member]	Common Stock Offerings [Member] Treasury Stock [Member]	Common Stock Offerings [Member] Retained Earnings [Member]	Common Stock Offerings [Member] AOCI Attributable to Parent [Member]	Common Stock Offerings [Member]	Common Stock [Member]	Preferred Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Jan. 31, 2021															15,681	1,038
Balances at Jan. 31, 2021															$ 157	$ 23,104	$ 128,241	$ (16,860)	$ (99,870)	$ (4,356)	$ 30,416
Net loss															0	0	0	0	(3,984)	0	(3,984)
Foreign currency translation															$ 0	$ 0	0	0	0	57	57
Restricted stock issued (in shares)															5	0
Restricted stock issued															$ 0	$ 0	11	0	0	0	11
Restricted stock forfeited for taxes															0	0	0	(2)	0	0	(2)
Preferred stock dividends															0	0	0	0	(584)	0	(584)
Stock-based compensation															$ 0	$ 0	109	0	0	0	109
Stock offering (in shares)	0	21						18	0
Stock offering	$ 0	$ 503	$ 0	$ 0	$ 0	$ 0	$ 503	$ 0	$ 0	$ 42	$ 0	$ 0	$ 0	$ 42
Balances (in shares) at Apr. 30, 2021															15,704	1,059
Balances at Apr. 30, 2021															$ 157	$ 23,607	128,403	(16,862)	(104,438)	(4,299)	26,568
Balances (in shares) at Jan. 31, 2022															15,705	1,683
Balances at Jan. 31, 2022															$ 157	$ 37,779	128,926	(16,862)	(117,856)	(1,881)	30,263
Net loss															0	0	0	0	(2,419)	0	(2,419)
Foreign currency translation															$ 0	$ 0	0	0	0	(3)	(3)
Restricted stock issued (in shares)															10	0
Restricted stock issued															$ 0	$ 0	0	0	0	0	0
Restricted stock forfeited for taxes															0	0	0	(1)	0	0	(1)
Preferred stock dividends															0	0	0	0	(947)	0	(947)
Stock-based compensation															$ 0	$ 0	236	0	0	0	236
Balances (in shares) at Apr. 30, 2022															15,715	1,683
Balances at Apr. 30, 2022															$ 157	$ 37,779	$ 129,162	$ (16,863)	$ (121,222)	$ (1,884)	$ 27,129