Business Acquisition - Additional Information (Details) $ in Thousands		3 Months Ended		12 Months Ended
	Jul. 01, 2015 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) facility	Sep. 30, 2015 USD ($)
Business Acquisition [Line Items]
Selling, general and administrative expenses				$ 17,359	$ 19,167
CBlade S.p.A. Forging & Manufacturing
Business Acquisition [Line Items]
Number of operated facilities | facility				2
Purchase price, net of assumed debt	$ 16,719
Purchase price adjustment		$ 275
Net sales recorded from the date of acquisition			$ 6,000
Net operating income from the date of acquisition			$ 209
Selling, general and administrative expenses					$ 2,681