Quarterly report pursuant to Section 13 or 15(d)

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

v3.2.0.727
Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive income/(loss), beginning balance $ (9,056) $ (5,765)
Other comprehensive income before reclassifications (1) 5
Amounts reclassified from accumulated other comprehensive loss 196 84
Total other comprehensive income 195 89
Accumulated other comprehensive income/(loss), ending balance (8,861) (5,676)
Pension and Other Postretirement Benefits Items [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive income/(loss), beginning balance (9,462) (6,168)
Amounts reclassified from accumulated other comprehensive loss 196 84
Total other comprehensive income 196 84
Accumulated other comprehensive income/(loss), ending balance (9,266) (6,084)
Foreign Currency Items [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive income/(loss), beginning balance 406 403
Other comprehensive income before reclassifications (1) 5
Total other comprehensive income (1) 5
Accumulated other comprehensive income/(loss), ending balance $ 405 $ 408