Intangible Assets

6 Months Ended

Mar. 31, 2013

Intangible Assets

8. Intangible Assets

Intangible assets consist principally of acquired patents and technology, customer relationships, licenses and trademarks. For the three months ended March 31, 2013 and 2012, the Company recorded amortization expense of $0.2 million for each period. For the six months ended March 31, 2013 and 2012, the Company recorded amortization expense of $0.4 million for each period.

Intangible assets consisted of the following (in thousands):

	March 31, 2013
	Weighted Average Original Life (Years)		Gross Carrying Amount		Accumulated Amortization			Net
Definite-lived intangible assets:
Customer lists		9.0	$	4,857	$	(3,004	)	$	1,853
Core technology		8.0		530		(375	)		155
Patents and other		16.8		2,256		(784	)		1,472
Subtotal				7,643		(4,163	)		3,480
Unamortized intangible assets:
Trademarks				580		—			580
Total			$	8,223	$	(4,163	)	$	4,060

	September 30, 2012
	Weighted Average Original Life (Years)		Gross Carrying Amount		Accumulated Amortization			Net
Definite-lived intangible assets:
Customer lists		9.0	$	4,857	$	(2,734	)	$	2,123
Core technology		8.0		530		(343	)		187
Patents and other		16.8		2,256		(716	)		1,540
Subtotal				7,643		(3,793	)		3,850
Unamortized intangible assets:
Trademarks				580		—			580
Total			$	8,223	$	(3,793	)	$	4,430

Based on the intangible assets in service as of March 31, 2013, estimated amortization expense for each of the next five fiscal years is as follows (in thousands):

Remainder of 2013	$	371
2014		742
2015		731
2016		594
2017		183
2018		137

Future amortization amounts presented above are estimates. Actual future amortization expense may be different, as a result of future acquisitions, impairments, changes in amortization periods, or other factors.