Quarterly report pursuant to Section 13 or 15(d)

Changes in Accumulated Other Comprehensive Loss - The Reclassifications Out of Accumulated Other Comprehensive Loss by Component (Detail)

v2.4.0.8
Changes in Accumulated Other Comprehensive Loss - The Reclassifications Out of Accumulated Other Comprehensive Loss by Component (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income before provision for income taxes $ 3,626 $ 5,618
Provision for income taxes 1,234 1,810
Net income 2,392 3,808
Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Amortization of Unrecognized Prior Service Benefit [Member]
   
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income before provision for income taxes 25 40
Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Amortization of Actuarial Loss [Member]
   
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income before provision for income taxes (155) (261)
Reclassifications Out of Accumulated Other Comprehensive Loss [Member] | Pension and Other Postretirement Benefits Items [Member]
   
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Income before provision for income taxes (130) (221)
Provision for income taxes (46) (78)
Net income $ (84) $ (143)