Quarterly report pursuant to Section 13 or 15(d)

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

v3.3.1.900
Changes in Accumulated Other Comprehensive Loss - Changes in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income/(loss), beginning balance     $ (9,056) $ (5,765)
Other comprehensive income before reclassifications     (184) 4
Amounts reclassified from accumulated other comprehensive loss     589 252
Total other comprehensive income $ 124 $ 44 405 256
Accumulated other comprehensive income/(loss), ending balance (8,651) (5,509) (8,651) (5,509)
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     589 252
Total other comprehensive income     589 252
Accumulated other comprehensive income/(loss), ending balance (8,873) (5,916) (8,873) (5,916)
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     (184) 4
Total other comprehensive income     (184) 4
Accumulated other comprehensive income/(loss), ending balance $ 222 $ (407) $ 222 $ (407)