6.	Intangibles

Intangible assets consist of the following (in thousands):

	Weighted Average Remaining Useful Life	June 30, 2014			June 30, 2013
Cost of amortizable intangibles:
Purchased technology	0.0 years	$	7,700		$	7,700
Customer relationships	2.3 years		1,900			1,900
Patents	12.9 years		101			78
Total cost of intangibles			9,701			9,678
Less accumulated amortization:
Purchased technology			(7,700	)		(7,497	)
Customer relationships			(1,506	)		(1,334	)
Patents			(19	)		(13	)
Total accumulated amortization			(9,225	)		(8,844	)

Total intangible assets, net		$	476		$	834

We recorded $381,000, $904,000, and $904,000 of amortization expense during each of the years ended June 30, 2014, 2013 and 2012, respectively. The estimated amortization expense related to intangible assets for the next five fiscal years is (in thousands):

Fiscal year:
2015	$	181
2016		181
2017		56
2018		7
2019		7
	$	432