Basis of Presentation - Intangibles (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2012		Sep. 30, 2012
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Intangible assets, finite and indefinite lived, gross	$ 6,233		$ 6,151
Accumulated amortization	(2,251)		(2,055)
Intangible assets, finite and indefinite lived, net	3,982		4,096
Noncompete Agreements [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Intangible assets, finite and indefinite lived, gross	1,061		1,057
Noncompete Agreements [Member] | Minimum [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	4 years
Noncompete Agreements [Member] | Maximum [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	8 years
Customer Lists [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	10 years
Intangible assets, finite and indefinite lived, gross	851		828
Patented Technology [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Intangible assets, finite and indefinite lived, gross	2,387		2,341
Patented Technology [Member] | Minimum [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	5 years
Patented Technology [Member] | Maximum [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	10 years
In Process Research And Development [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Intangible assets, finite and indefinite lived, gross	1,600	[1]	1,600	[1]
Other Intangible Assets [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Intangible assets, finite and indefinite lived, gross	$ 334		$ 325
Other Intangible Assets [Member] | Minimum [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	2 years
Other Intangible Assets [Member] | Maximum [Member]
Acquired Finite and Indefinite-Lived Intangible Assets [Line Items]
Useful Life (in years)	10 years

[1] The in-process research and development will be amortized over its useful life when it has reached technological feasibility.