Basis of Presentation - Intangibles (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2015	Jan. 30, 2015	Dec. 24, 2014	Sep. 30, 2014
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 9,279			$ 6,112
Accumulated Amortization	(4,092)			(3,434)
Net Carrying Amount	5,187			2,678
Non-compete agreements
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,035			1,055
Accumulated Amortization	(1,035)			(955)
Net Carrying Amount	$ 0			100
Non-compete agreements | Minimum
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	4 years
Non-compete agreements | Maximum
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	8 years
Customer lists
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 714			817
Accumulated Amortization	(595)			(592)
Net Carrying Amount	$ 119			225
Useful Life (in years)	10 years
Technology
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,116			2,319
Accumulated Amortization	(1,805)			(1,682)
Net Carrying Amount	$ 311			637
Technology | Minimum
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	5 years
Technology | Maximum
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	10 years
In-process research and development
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,600			1,600
Accumulated Amortization	(267)			(27)
Net Carrying Amount	$ 1,333			1,573
Useful Life (in years)	5 years
Trade names
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,330			0
Accumulated Amortization	(37)			0
Net Carrying Amount	$ 1,293			0
Useful Life (in years)	15 years
Other
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,484			321
Accumulated Amortization	(353)			(178)
Net Carrying Amount	$ 2,131			$ 143
Other | Minimum
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	2 years
Other | Maximum
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	12 years
SoLayTec, B.V.
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Percentage of voting interests acquired			51.00%
Intangible assets acquired			$ 2,200
BTU International, Inc (BTU)
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Intangible assets acquired		$ 0