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Changes in Accumulated Other Comprehensive Income by Component, Net of Tax (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 3 Months Ended 3 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Available for Sale Securities
Jun. 30, 2013
Available for Sale Securities
Jun. 30, 2014
Currency Translation Adjustments
Mar. 31, 2014
Currency Translation Adjustments
Jun. 30, 2013
Currency Translation Adjustments
Mar. 31, 2013
Currency Translation Adjustments
Jun. 30, 2014
Pension/Post-retirement Benefits
Jun. 30, 2013
Pension/Post-retirement Benefits
Mar. 31, 2013
Pension/Post-retirement Benefits
Jun. 30, 2014
Interest Rate Swaps
Jun. 30, 2013
Interest Rate Swaps
Accumulated Other Comprehensive Income (Loss) [Line Items]                          
Accumulated other comprehensive income, beginning balance $ (12,225) $ (17,141) $ 92 $ (121) $ (9,811) $ (9,811) $ (9,811) $ (9,811) $ (116) $ (4,353) $ (4,353) $ (2,390) $ (2,856)
Gains/(losses) recognized in OCI 162 31 31 31         131        
Reclasses from OCI to net income 186 197 70 80               116 117
Net period OCI 348 228 101 111         131     116 117
Accumulated other comprehensive income, ending balance $ (11,877) $ (16,913) $ 193 $ (10) $ (9,811) $ (9,811) $ (9,811) $ (9,811) $ 15 $ (4,353) $ (4,353) $ (2,274) $ (2,739)