Earnings Per Share and Cash Dividends - Schedule of Number of Shares Used in Calculating Basic and Diluted Earnings (Loss) Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Weighted average common shares outstanding:
Basic	23,332	23,240	23,326	23,191
Effect of dilutive securities:
Stock awards and options to purchase shares of common stock	407	0	410	0
Diluted	23,739	23,240	23,736	23,191