Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2013

Intangible Assets

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

Estimated Amortization Expenses

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