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, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Weighted average common shares outstanding:
Basic	23,240	23,138	23,191	23,127
Effect of dilutive securities:
Stock awards and options to purchase shares of common stock	0	154	0	243
Diluted	23,240	23,292	23,191	23,370