Acquisitions and Divestitures (Assets held for sale) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets held for sale	$ 37,256	$ 0
Non-current assets held for sale	30,809	0
Current liabilities held for sale	14,208	0
Non-current liabilities held for sale	3,665	$ 0
Memcor [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	7,291
Receivables, net	9,603
Inventories, net	6,456
Contract assets	13,025
Prepaid and other current assets	881
Current assets held for sale	37,256
Property, plant and equipment, net	14,827
Goodwill	14,911
Intangible assets, net	1,024
Other non-current assets	47
Non-current assets held for sale	30,809
Total assets held for sale	68,065
Accounts payable	5,646
Contract liabilities	1,302
Product warranties	3,264
Accrued expenses and other liabilities	3,996
Current liabilities held for sale	14,208
Product warranties	1,594
Other non-current liabilities	2,071
Non-current liabilities held for sale	3,665
Total liabilities held for sale	$ 17,873