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
Jun. 30, 2014
Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive loss, beginning balance $ (5,765) $ (8,033)
Other comprehensive income before reclassifications 5 7
Amounts reclassified from accumulated other comprehensive loss 84 143
Total other comprehensive income 89 150
Accumulated other comprehensive loss, ending balance (5,676) (7,883)
Pension and Other Postretirement Benefits Items [Member]
    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive loss, beginning balance (6,168) (8,443)
Amounts reclassified from accumulated other comprehensive loss 84 143
Total other comprehensive income 84 143
Accumulated other comprehensive loss, ending balance (6,084) (8,300)
Foreign Currency Items [Member]
    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive loss, beginning balance 403 410
Other comprehensive income before reclassifications 5 7
Total other comprehensive income 5 7
Accumulated other comprehensive loss, ending balance $ 408 $ 417