Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Jan. 31, 2024	Jan. 31, 2023
Allowance for doubtful accounts	$ 332	$ 332
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	1,683,000	1,683,000
Preferred stock, shares outstanding (in shares)	1,683,000	1,683,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	40,000,000	40,000,000
Common stock, issued (in shares)	1,405,779	1,599,053
Treasury stock, shares (in shares)	0	193,274