Intangible Assets

9 Months Ended

Jun. 30, 2015

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 June 30, 2015 and 2014, the Company recorded amortization expense of $0.2 million for each period. For the nine months ended June 30, 2015 and 2014, the Company recorded amortization expense of $0.6 million for each period.

Intangible assets consisted of the following:

	June 30, 2015
(Dollars in thousands)	Weighted Average Original Life (Years)		Gross Carrying Amount		Accumulated Amortization			Net
Definite-lived intangible assets:
Customer lists		9.0	$	4,857	$	(4,218	)	$	639
Core technology		8.0		530		(524	)		6
Patents and other		16.8		2,256		(1,092	)		1,164
Subtotal				7,643		(5,834	)		1,809
Unamortized intangible assets:
Trademarks				580		—			580
Total			$	8,223	$	(5,834	)	$	2,389

	September 30, 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	$	(3,813	)	$	1,044
Core technology		8.0		530		(475	)		55
Patents and other		16.8		2,256		(989	)		1,267
Subtotal				7,643		(5,277	)		2,366
Unamortized intangible assets:
Trademarks				580		—			580
Total			$	8,223	$	(5,277	)	$	2,946

Based on the intangible assets in service as of June 30, 2015, estimated amortization expense for the remainder of fiscal 2015 and each of the next five fiscal years is as follows (Dollars in thousands):

Remainder of 2015	$	175
2016		594
2017		183
2018		137
2019		137
2020		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.