Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Sep. 30, 2011
Property And Equipment Details [Abstract]
Land	$ 1,937		$ 1,937		$ 1,723
Buildings and Improvements, Gross	14,107		14,107		13,427
Machinery and Equipment, Gross	32,030		32,030		20,979
Computer Equipment Gross	7,875		7,875		5,864
Construction in Progress, Gross	1,231		1,231		2,203
Property, Plant and Equipment, Gross	57,180		57,180		44,196
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(22,883)		(22,883)		(18,987)
Property and equipment, net	34,297		34,297		25,209
Depreciation	$ 1,549	$ 1,266	$ 4,589	$ 3,612