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Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax (Detail) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive income, beginning balance $ (6,866) $ (20,378)
Gains/(losses) recognized in OCI 59 (44)
Reclasses from OCI to net income 173 241
Net period OCI 232 197
Accumulated other comprehensive income, ending balance (6,634) (20,181)
Available for Sale Securities    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive income, beginning balance (208) 235
Gains/(losses) recognized in OCI 59 (114)
Reclasses from OCI to net income 102 62
Net period OCI 161 (52)
Accumulated other comprehensive income, ending balance (47) 183
Currency Translation Adjustment    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive income, beginning balance (9,811) (9,811)
Accumulated other comprehensive income, ending balance (9,811) (9,811)
Pension/Post-retirement Benefits    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive income, beginning balance 4,683 (9,129)
Gains/(losses) recognized in OCI   70
Net period OCI   70
Accumulated other comprehensive income, ending balance 4,683 (9,059)
Interest Rate Swaps    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Accumulated other comprehensive income, beginning balance (1,530) (1,673)
Reclasses from OCI to net income 71 179
Net period OCI 71 179
Accumulated other comprehensive income, ending balance $ (1,459) $ (1,494)