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Plant Restructuring (table)
12 Months Ended
Mar. 31, 2014
Restructuring And Related Activities [Abstract]  
Schedule of Restructuring and Related Costs [Table Text Block]
    Long-Lived    
    Asset Other  
  Severance Charges Costs  Total
  (In thousands)
         
Balance March 31, 2011$456$0$520$976
First-quarter charge to expense 54 0 0 54
Second-quarter (credit) charge to expense (19) 0 4 (15)
Cash payments/write offs (454) 0 (524) (978)
Balance March 31, 2012 37 0 0 37
Third-quarter charge to expense 0 1,107 1,403 2,510
Fourth-quarter charge to expense 0 109 878 987
Cash payments/write offs (17) (42) (1,974) (2,033)
Balance March 31, 2013 20 1,174 307 1,501
First-quarter charge to expense 0 0 154 154
Second-quarter charge to expense 0 341 6 347
Cash payments/write offs (10) (1,515) (467) (1,992)
Balance March 31, 2014$10$0$0$10