Segment Data and Related Information (Tables)

12 Months Ended

Sep. 30, 2013

Segment Reporting [Abstract]

Schedule of segment revenue

The following tables set forth revenue attributable to each of our reporting segments and by geographic region with revenue assigned to geographic regions based on our customers’ billing address.

Segment Revenue	For the Fiscal Years Ended September 30,
(in thousands)	2013		2012		2011
Fiber Optics revenue	$	96,977	$	96,153	$	125,659
Photovoltaics revenue	71,170		67,628		75,269
Total revenue	$	168,147	$	163,781	$	200,928

Schedule of revenue by geographic region

Revenue by Geographic Region	For the Fiscal Years Ended September 30,
(in thousands)	2013		2012		2011
United States	$	107,341	$	111,962	$	140,203
Asia	44,373		27,519		49,417
Europe	15,318		15,032		9,081
Other	1,115		9,268		2,227
Total revenue	$	168,147	$	163,781	$	200,928

Statement of operations data

The following table sets forth operating income (loss) attributable to each of our reporting segments.

Operating Income (Loss)	For the Fiscal Years Ended September 30,
(in thousands)	2013			2012			2011
Fiber Optics operating income (loss)	$	(8,382	)	$	(26,684	)	$	(30,276	)
Photovoltaics operating income (loss)	8,602			(8,941		)	(2,251		)
Total operating income (loss)	$	220		$	(35,625	)	$	(32,527	)

Schedule of depreciation, amortization, and accretion expense

The following tables set forth our significant non-cash expenses attributable to each of our reporting segments.

Depreciation, Amortization, and Accretion Expense	For the Fiscal Years Ended September 30,
(in thousands)	2013		2012		2011
Fiber Optics segment	$	5,737	$	5,246	$	6,599
Photovoltaics segment	2,951		4,174		5,374
Total depreciation, amortization, and accretion expense	$	8,688	$	9,420	$	11,973

Schedule of stock-based compensation expense

Stock-based Compensation Expense	For the Fiscal Years Ended September 30,
(in thousands)	2013		2012		2011
Fiber Optics segment	$	2,668	$	4,678	$	4,650
Photovoltaics segment	1,541		3,078		2,778
Total stock-based compensation expense	$	4,209	$	7,756	$	7,428

Schedule of long-lived assets

The following table sets forth long-lived assets for each of our reporting segments and our unallocated Corporate division.

Long-lived Assets	As of		As of
(in thousands)	September 30, 2013		September 30, 2012
Fiber Optics segment	$	23,804	$	24,209
Photovoltaics segment	40,048		40,252
Unallocated Corporate division	8,435		7,247
Long-lived assets	$	72,287	$	71,708