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Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Revenue Recognition (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Mar. 31, 2018
Revenue from Contract with Customer, Excluding Assessed Tax	$ 217,142	$ 212,828	$ 442,134	$ 416,554
Contract with Customer, Liability, Current	17,077		17,077		$ 15,909
Proceeds from Customers for Progress Payments			23,111
Contract with Customer, Liability, Revenue Recognized			(21,013)
Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits			$ (930)
Revenue, Performance Obligation, Description of Payment Terms			30-60
Crane Solutions [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	89,640		$ 187,142
Industrial Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	97,202		195,737
Engineered Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	20,464		38,147
All other [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 9,836		$ 21,108
Long-term Contract with Customer [Member]
Revenue, Performance Obligation, Description of Warranty			24 to 36
Short-term Contract with Customer [Member]
Revenue, Performance Obligation, Description of Warranty			12