Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2011
Property And Equipment Details [Abstract]
Land	$ 1,754		$ 1,723
Buildings and Improvements, Gross	14,071		13,427
Machinery and Equipment, Gross	31,296		20,979
Computer Equipment Gross	6,082		5,864
Construction in Progress, Gross	1,480		2,203
Property, Plant and Equipment, Gross	54,683		44,196
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(19,845)		(18,987)
Property and equipment, net	34,838		25,209
Depreciation	$ 1,458	$ 1,085