Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Apr. 30, 2021	Jan. 31, 2021
ASSETS
Allowance for doubtful accounts, current	$ 952	$ 948
Stockholders’ equity:
Preferred stock, par value (in usd per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	1,059,000	1,038,000
Preferred stock, shares outstanding (in shares)	1,059,000	1,038,000
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	15,704,000	15,681,000
Treasury stock, shares (in shares)	1,931,000	1,929,000