Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of changes in carrying amount of goodwill by segment

The changes in the carrying amount of goodwill by segment for the period from October 1, 2011 to March 31, 2012 are as follows (in thousands):

	Commercial Lasers and Components			Specialty Lasers and Systems			Total
Balance as of October 1, 2011	$	6,365		$	69,589		$	75,954
Translation adjustments and other	(2		)	(146		)	(148		)
Balance as of March 31, 2012	$	6,363		$	69,443		$	75,806

Schedule of components of amortizable intangible assets

Components of our amortizable intangible assets are as follows (in thousands):

	March 31, 2012							October 1, 2011
	Gross Carrying Amount		Accumulated Amortization			Net		Gross Carrying Amount		Accumulated Amortization			Net
Existing technology	$	52,301	$	(43,962	)	$	8,339	$	52,283	$	(41,615	)	$	10,668
Patents	7,162		(7,137		)	25		7,246		(7,220		)	26
Customer lists	9,852		(5,652		)	4,200		9,807		(5,142		)	4,665
Trade name	3,553		(2,692		)	861		3,566		(2,504		)	1,062
Non-compete agreement	837		(778		)	59		837		(784		)	53
Production know-how	910		(713		)	197		910		(621		)	289
In-process research & development	1,065		—			1,065		1,217		—			1,217
Total	$	75,680	$	(60,934	)	$	14,746	$	75,866	$	(57,886	)	$	17,980

Schedule of estimated amortization expense

At March 31, 2012, estimated amortization expense for the remainder of fiscal 2012, the next five succeeding fiscal years and all fiscal years thereafter are as follows (in thousands):

	Estimated Amortization Expense
2012 (remainder)	$	3,082
2013	4,846
2014	3,374
2015	2,033
2016	1,267
2017	136
Thereafter	8
Total	$	14,746