Business realignment and acquisition integration charges - Acquisition integration charges related to the Lord and Exotic acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Diversified Industrial
Restructuring Cost and Reserve [Line Items]
Acquisition integration charges	$ 3,249	$ 6,725	$ 6,864	$ 10,139
Aerospace Systems
Restructuring Cost and Reserve [Line Items]
Acquisition integration charges	$ 343	$ 489	$ 675	$ 1,084

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

No definition available.

Name:	us-gaap_BusinessCombinationIntegrationRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration