Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2012
Property And Equipment Details [Abstract]
Land	$ 1,932		$ 1,952
Buildings and Improvements, Gross	14,687		14,420
Machinery and Equipment, Gross	35,715		33,075
Computer Equipment Gross	8,778		8,276
Construction in Progress, Gross	1,269		1,773
Property, Plant and Equipment, Gross	62,381		59,496
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(25,201)		(23,712)
Property and equipment, net	37,180		35,784
Depreciation	$ 1,717	$ 1,458