Intangible Assets (Tables)

9 Months Ended

Jun. 30, 2012

Intangible Assets [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The following table sets forth the carrying value of intangible assets by reporting segment:

(in thousands)	As of June 30, 2012							As of September 30, 2011
	Gross Assets		Accumulated Amortization			Net Assets		Gross Assets		Accumulated Amortization			Net Assets
Fiber Optics:
Core Technology	$	12,727	$	(10,982	)	$	1,745	$	13,872	$	(10,862	)	$	3,010
Customer Relations	3,511		(2,287		)	1,224		3,511		(2,071		)	1,440
Patents	4,697		(4,352		)	345		4,697		(4,265		)	432
	20,935		(17,621		)	3,314		22,080		(17,198		)	4,882
Photovoltaics:
Patents	1,972		(1,541		)	431		2,279		(1,295		)	984
Total	$	22,907	$	(19,162	)	$	3,745	$	24,359	$	(18,493	)	$	5,866

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

Based on the carrying amount of our intangible assets as of June 30, 2012, the estimated future amortization expense is as follows:

Estimated Future Amortization Expense
(in thousands)
Three months ended September 30, 2012	$	317
Fiscal year ended September 30, 2013	1,269
Fiscal year ended September 30, 2014	1,017
Fiscal year ended September 30, 2015	555
Fiscal year ended September 30, 2016	555
Thereafter	32
Total	$	3,745