Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2012

Summary of Significant Accounting Policies [Abstract]

Property, plant and equipment estimated useful life

	Years
Rental equipment		3-10
Property, plant and equipment:
Machinery and equipment		3-15
Buildings and building improvements		10-50
Other		5-10

Changes in the warranty reserve

Balance at October 1, 2010	$	1,378
Accruals for warranties issued during the year		2,675
Settlements made (in cash or in kind) during the year		(1,930	)
Balance at September 30, 2011		2,123
Accruals for warranties issued during the year		1,354
Settlements made (in cash or in kind) during the year		(1,169	)
Balance at September 30, 2012	$	2,308

Fair value of options granted

Dividend yield rate	0	%
Risk-free interest rate	2.4	%
Expected volatility	56.6	%
Expected option term	6.25 years