Intangible Assets (Tables)

3 Months Ended

Dec. 31, 2012

Intangible Assets [Abstract]

Schedule Of Intangible Assets Subject To Amortization

	December 31, 2012						September 30, 2012
	Gross				Net		Gross				Net
	Carrying		Accumulated		Carrying		Carrying		Accumulated		Carrying
	Value		Amortization		Value		Value		Amortization		Value
Supply agreement	$	17,580	$	(7,518)	$	10,062	$	17,580	$	(7,225)	$	10,355
Purchased technology		11,798		(9,214)		2,584		11,818		(9,121)		2,697
Trade name		1,136		(895)		241		1,136		(871)		265
Total	$	30,514	$	(17,627)	$	12,887	$	30,534	$	(17,217)	$	13,317