Schedule I - CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY (Detail) - CONDENSED BALANCE SHEETS PARENT COMPANY ONLY (Parentheticals) In Thousands, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012
Common stock, shares authorized	45,000	45,000
Common stock, shares issued	29,853	29,853
Treasury stock, shares	21,701	21,523
Parent Company [Member]
Common stock, shares authorized	45,000	45,000
Common stock, shares issued	29,853	29,853
Treasury stock, shares	21,701	21,523