Acquisitions - Assets Acquired and Liabilities Assumed of S&N (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Sep. 30, 2022	Apr. 29, 2022	Sep. 30, 2021
Tangible assets acquired:
Goodwill	$ 16,422	$ 17,894		$ 69
L3Harris Technologies, Inc.
Tangible assets acquired:
Accounts receivable			$ 803
Inventory			370
Contract assets			3,920
Operating lease right-of-use assets			1,529
Property, plant, and equipment			1,996
Net pension benefit assets			1,727
Intangible assets acquired			2,740
Goodwill			3,108
Liabilities assumed:
Accounts payable			(1,226)
Accrued expenses			622
Contract liabilities			(6,024)
Operating lease liabilities			(1,565)
Asset retirement obligation			(1,895)
Total purchase consideration			$ 4,861