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Intangible Assets
 6 Months Ended
Mar. 31, 2012
Intangible Assets [Abstract]  
Intangible Assets [Text Block]
Intangible Assets

The following table sets forth changes in the carrying value of intangible assets by reporting segment:
(in thousands)
 
As of March 31, 2012
 
As of September 30, 2011
 
 
Gross
Assets
 
Accumulated
Amortization
 
Net
Assets
 
Gross Assets
 
Accumulated
Amortization
 
Net
Assets
Fiber Optics:
 
 
 
 
 
 
 
 
 
 
 
 
   Core Technology
 
$
12,727

 
$
(10,795
)
 
$
1,932

 
$
13,872

 
$
(10,862
)
 
$
3,010

   Customer Relations
 
3,511

 
(2,215
)
 
1,296

 
3,511

 
(2,071
)
 
1,440

   Patents
 
4,697

 
(4,323
)
 
374

 
4,697

 
(4,265
)
 
432

 
 
20,935

 
(17,333
)
 
3,602

 
22,080

 
(17,198
)
 
4,882

Photovoltaics:
 
 
 
 
 
 
 
 
 
 
 
 
   Patents
 
2,279

 
(1,459
)
 
820

 
2,279

 
(1,295
)
 
984

Total
 
$
23,214

 
$
(18,792
)
 
$
4,422

 
$
24,359

 
$
(18,493
)
 
$
5,866



We entered into a Master Purchase Agreement with SEI pursuant to which we have agreed to sell certain assets which include $0.5 million of fiber optics-related intangible assets as of March 31, 2012, an amount which is classified within "assets held for sale" on our consolidated balance sheet. See Footnote 1 - Basis of Presentation for additional disclosures related to this asset sale.

Amortization expense related to intangible assets is included in sales, general, and administrative expense on our statement of operations. Based on the carrying amount of our intangible assets as of March 31, 2012, the estimated future amortization expense is as follows:
Estimated Future Amortization Expense
 
(in thousands)
 
Six months ended September 30, 2012
$
721

Fiscal year ended September 30, 2013
1,405

Fiscal year ended September 30, 2014
1,154

Fiscal year ended September 30, 2015
555

Fiscal year ended September 30, 2016
555

Thereafter
32

Total
$
4,422



Impairment Testing

As of December 31, 2011, we performed an impairment test of long-lived assets within our Fiber Optics segment and we determined that no impairment existed. The impairment test was triggered by a change in long-term financial and cash flow forecasts due to the adverse impact the Thailand flood has had on our operations. See Footnote 9 - Flood-related Losses for additional disclosures related to the impact of the Thailand flood on our operations. In making this determination, we used certain assumptions, including estimates of future cash flows expected to be generated by these long-lived assets, which are based on additional assumptions such as asset utilization, expected length of service from the assets, and estimated salvage values. If we are unable to achieve projected cash flows, we may be required to perform additional impairment tests of our remaining long-lived assets which may result in the recording of impairment charges.