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Business And Summary Of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Jan. 31, 2015
Accounting Policies [Abstract]      
Operating Expenses, Restatement and Remediation Related $ 618tecd_OperatingExpensesRestatementandRemediationRelated $ 12,236tecd_OperatingExpensesRestatementandRemediationRelated  
Gain (Loss) Related to Litigation Settlement 38,511us-gaap_GainLossRelatedToLitigationSettlement 0us-gaap_GainLossRelatedToLitigationSettlement  
Accounts receivable sold 308,400tecd_AccountsReceivableSoldToandHeldbyFinancialInstitutions   310,900tecd_AccountsReceivableSoldToandHeldbyFinancialInstitutions
Discount fees on sale of accounts receivable $ 1,000tecd_SaleOfAccountsReceivableDiscountFees $ 1,300tecd_SaleOfAccountsReceivableDiscountFees