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Summary of Significant Accounting Policies (Intangibles) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2013 | Jan. 30, 2015 | Dec. 24, 2014
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Amortization of intangible assets |  | $ 1,200 | $ 700 | $ 600 |  |
Amortization in fiscal year 2016 | $ 800 | 800 |  |  |  |
Amortization in fiscal year 2017 | 700 | 700 |  |  |  |
Amortization in fiscal year 2018 | 600 | 600 |  |  |  |
Amortization in fiscal year 2019 | 600 | 600 |  |  |  |
Amortization in fiscal year 2019 | 600 | 600 |  |  |  |
Gross Carrying Amount | 7,528 | 7,528 | 6,112 |  |  |
Accumulated Amortization | (2,589) | (2,589) | (3,434) |  |  |
Net Carrying Amount | 4,939 | 4,939 | 2,678 |  |  |
Non-compete agreements |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Amount | 137 | 137 | 1,055 |  |  |
Accumulated Amortization | (137) | (137) | (955) |  |  |
Net Carrying Amount | 0 | $ 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] |  |  |  |  |  |
Useful Life (in years) |  | 10 years |  |  |  |
Gross Carrying Amount | 2,434 | $ 2,434 | 817 |  |  |
Accumulated Amortization | (808) | (808) | (592) |  |  |
Net Carrying Amount | 1,626 | $ 1,626 | 225 |  |  |
Customer lists | Minimum |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Useful Life (in years) |  | 6 years |  |  |  |
Technology |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Amount | 3,223 | $ 3,223 | 2,319 |  |  |
Accumulated Amortization | (1,368) | (1,368) | (1,682) |  |  |
Net Carrying Amount | 1,855 | $ 1,855 | 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] |  |  |  |  |  |
Useful Life (in years) |  | 5 years |  |  |  |
Gross Carrying Amount | 0 | $ 0 | 1,600 |  |  |
Accumulated Amortization | 0 | 0 | (27) |  |  |
Net Carrying Amount | 0 | 0 | 1,573 |  |  |
Trade names |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Amount | 1,456 | 1,456 | 0 |  |  |
Accumulated Amortization | (72) | (72) | 0 |  |  |
Net Carrying Amount | 1,384 | $ 1,384 | 0 |  |  |
Trade names | Minimum |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Useful Life (in years) |  | 10 years |  |  |  |
Trade names | Maximum |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Useful Life (in years) |  | 15 years |  |  |  |
Other |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Gross Carrying Amount | 278 | $ 278 | 321 |  |  |
Accumulated Amortization | (204) | (204) | (178) |  |  |
Net Carrying Amount | 74 | $ 74 | $ 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) |  | 10 years |  |  |  |
SoLayTec, B.V. |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Percentage of voting interests acquired |  |  |  |  |  | 51.00%
Finite-lived intangibles acquired |  |  |  |  |  | $ 2,000
Finite-lived intangibles adjustment | 200 |  |  |  |  |
SoLayTec, B.V. | Technology |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-lived intangibles acquired |  |  |  |  |  | 1,800
SoLayTec, B.V. | Trade names |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-lived intangibles acquired |  |  |  |  |  | $ 200
BTU International, Inc (BTU) |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-lived intangibles acquired |  |  |  |  | $ 2,900 |
Finite-lived intangibles adjustment | 1,700 |  |  |  |  |
BTU International, Inc (BTU) | Customer lists |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-lived intangibles acquired |  |  |  |  | 1,700 |
BTU International, Inc (BTU) | Trade names |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Finite-lived intangibles acquired |  |  |  |  | $ 1,200 |
Kingstone |  |  |  |  |  |
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items] |  |  |  |  |  |
Intangible assets derecognized | 3,200 |  |  |  |  |
Accumulated amortization derecognized | $ 1,900 |  |  |  |  |

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