Revenue Recognition (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Mar. 31, 2021	Mar. 31, 2020
Contract with Customer, Asset, Net, Current	$ 2,040,000		$ 2,040,000		$ 8,559,000
Revenue from Contract with Customer, Excluding Assessed Tax	223,635,000	$ 157,790,000	437,099,000	$ 296,860,000
Contract with Customer, Liability, Current	16,576,000	14,284,000	16,576,000	14,284,000	15,373,000	$ 10,796,000
Proceeds from Customers for Progress Payments			29,240,000	18,533,000
Contract with Customer, Liability, Revenue Recognized			(32,254,000)	(15,754,000)
Revenue, Remaining Performance Obligation, Amount	$ 2,794,000		$ 2,794,000
Revenue, Remaining Performance Obligation, Percentage	74.00%		74.00%
Allowance for Doubtful Other Receivables, Current	$ 5,210,000	6,295,000	$ 5,210,000	6,295,000	$ 5,686,000	$ 5,056,000
Proceeds from Deposits from Customers			73,000	709,000
Dorner
Revenue from Contract with Customer, Excluding Assessed Tax	33,539,000		67,718,000
SEC Schedule, 12-09, Valuation Allowances and Reserves, Business Acquired	152,000			0
Contract with Customer, Liability, Increase (Decrease) for Contract Acquired in Business Combination	4,144,000	0
SEC Schedule, 12-09, Allowance, Credit Loss
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Cost and Expense			291,000	2,364,000
SEC Schedule, 12-09, Valuation Allowances and Reserves, Deduction			(1,003,000)	(1,218,000)
SEC Schedule, 12-09, Valuation Allowances and Reserves, Additions, Charge to Other Account			84,000	93,000
Crane Solutions [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	83,911,000	71,643,000	163,578,000	140,632,000
Industrial Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	84,230,000	67,321,000	163,841,000	121,038,000
Engineered Products [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	21,933,000	18,830,000	41,925,000	35,157,000
All other [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	22,000	(4,000)	37,000	33,000
Precision Conveyor Products
Revenue from Contract with Customer, Excluding Assessed Tax	$ 33,539,000	$ 0	$ 67,718,000	$ 0
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