Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v2.4.0.6
Income Taxes (Details Textual) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Jan. 31, 2013
Jan. 31, 2012
Jan. 31, 2011
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 57.00% (113.00%) (8.00%)
Deferred Tax Assets, Operating Loss Carryforwards, Domestic $ 15.4    
Deferred Tax Assets, Operating Loss Carryforwards, State and Local 66.4    
Deferred Tax Assets, Operating Loss Carryforwards, Foreign 4.8    
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax 0.6    
Deferred Tax Assets, Tax Credit Carryforwards, Foreign 0.4    
Allocation Of Cumulative Undistributed Earnings Of Foreign Subsidiaries, Reinvestment 69    
Repatriated Amount Subject To Us Tax Rate 58    
Unrecognized Tax Benefits Income Tax Expense 3.6    
Deferred Tax Assets Capital Loss Carryforwards Domestic 10.60    
Capital Loss Carryforwards Expiration Dates 2018    
Unrecognized Tax Benefits, Interest on Income Taxes Expense 0.3    
Domestic Tax Authority [Member]
      
Deferred Tax Assets, Tax Credit Carryforwards, Research 7.4    
Deferred Tax Assets Tax Credit Carryforward, Expiration Period fiscal 2014    
State and Local Jurisdiction [Member]
      
Deferred Tax Assets, Tax Credit Carryforwards, Research 1.5    
Deferred Tax Assets Tax Credit Carryforward Investment $ 0.2    
Deferred Tax Assets Tax Credit Carryforward, Expiration Period fiscal 2020