Intangible Assets

6 Months Ended

Mar. 31, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

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, 2014 and 2013, the Company recorded amortization expense of $0.2 million for each period. For the six months ended March 31, 2014 and 2013, the Company recorded amortization expense of $0.4 million for each period.

Intangible assets consisted of the following:

	March 31, 2014
(Dollars in thousands)	Weighted Average Original Life (Years)		Gross Carrying Amount		Accumulated Amortization			Net
Definite-lived intangible assets:
Customer lists		9.0	$	4,857	$	(3,543	)	$	1,314
Core technology		8.0		530		(442	)		88
Patents and other		16.8		2,256		(921	)		1,335
Subtotal				7,643		(4,906	)		2,737
Unamortized intangible assets:
Trademarks				580		—			580
Total			$	8,223	$	(4,906	)	$	3,317

	September 30, 2013
(Dollars in thousands)	Weighted Average Original Life (Years)		Gross Carrying Amount		Accumulated Amortization			Net
Definite-lived intangible assets:
Customer lists		9.0	$	4,857	$	(3,274	)	$	1,583
Core technology		8.0		530		(409	)		121
Patents and other		16.8		2,256		(852	)		1,404
Subtotal				7,643		(4,535	)		3,108
Unamortized intangible assets:
Trademarks				580		—			580
Total			$	8,223	$	(4,535	)	$	3,688

Based on the intangible assets in service as of March 31, 2014, estimated amortization expense for the remainder of fiscal 2014 and each of the next five fiscal years is as follows (Dollars in thousands):

Remainder of 2014	$	371
2015		731
2016		594
2017		183
2018		137
2019		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.