Quarterly report pursuant to Section 13 or 15(d)

Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail)

v2.4.0.8
Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance at April 1, 2013     $ (8,033)  
Other comprehensive income before reclassifications     73  
Amounts reclassified from accumulated other comprehensive loss     429  
Total other comprehensive income 171 178 502 453
Balance at December 31, 2013 (7,531)   (7,531)  
Pension and Other Postretirement Benefits Items [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance at April 1, 2013     (8,443)  
Other comprehensive income before reclassifications         
Amounts reclassified from accumulated other comprehensive loss     429  
Total other comprehensive income     429  
Balance at December 31, 2013 (8,014)   (8,014)  
Foreign Currency Items [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Balance at April 1, 2013     410  
Other comprehensive income before reclassifications     73  
Amounts reclassified from accumulated other comprehensive loss         
Total other comprehensive income     73  
Balance at December 31, 2013 $ 483   $ 483