Property and Equipment (Details) (USD $) In Thousands	12 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Property And Equipment Details [Abstract]
Land	$ 1,723	$ 261
Buildings and Improvements, Gross	13,427	5,870
Machinery and Equipment, Gross	20,979	17,495
Computer Equipment Gross	5,864	4,886
Construction in Progress, Gross	2,203	1,626
Property, Plant and Equipment, Gross	44,196	30,138
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(18,987)	(14,900)
Property and equipment, net	25,209	15,238	9,313
Depreciation	$ 4,501	$ 3,692	$ 2,546