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Pension And Other Postretirement Benefit Plans (Funded Status In Consolidated Balance Sheets) (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Mar. 31, 2016
Defined Benefit Plan Disclosure [Line Items]    
Non-current liability (reported as pensions and other postretirement benefits) $ (80,689) $ (92,177)
Pension Benefits [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Non-current asset (reported in other noncurrent assets) 1,710 2,044
Current liability (included in accounts payable and accrued expenses) (1,106) (630)
Non-current liability (reported as pensions and other postretirement benefits) (49,703) (59,060)
Amounts recognized in the consolidated balance sheets (49,099) (57,646)
Other Postretirement Benefits [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Non-current asset (reported in other noncurrent assets) 0 0
Current liability (included in accounts payable and accrued expenses) (2,746) (2,543)
Non-current liability (reported as pensions and other postretirement benefits) (30,986) (33,117)
Amounts recognized in the consolidated balance sheets $ (33,732) $ (35,660)