Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2015	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]
Goodwill	$ 294,315				$ 294,315		$ 298,487
Amortization expense for intangible assets	4,245	$ 4,429			12,665	$ 16,315
Infrastructure [Member]
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]
Goodwill	0				0		0
Goodwill, Written off Related to Sale of Business Unit						(6,500)
Infrastructure [Member] | Portfolio of Businesses for Strategic Alternatives [Member]
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]
Net Book Value	30,000				30,000
Industrial [Member]
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]
Goodwill	267,042				267,042		271,501
Goodwill, Written off Related to Sale of Business Unit						$ (1,100)
WIDIA [Member]
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]
Goodwill	$ 27,273				$ 27,273		$ 26,986
December Charges [Member] | Infrastructure [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill and Intangible Asset Impairment				$ 106,100
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]
Goodwill, Impairment Loss			$ 105,700
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			400
December Charges [Member] | WIDIA [Member]
Goodwill and Other Intangible Assets (Additional Textual) [Abstract]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)			$ 2,300