Intangible Assets, Net

12 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, Net

Intangible Assets, Net

Intangible assets, net consist of (in thousands):

	June 30,
	2018			2017
Patent costs	$	2,330		$	2,330
Accumulated amortization	(1,460		)	(1,328		)
Total definite-lived intangible assets, net	870			1,002
Trademarks and other indefinite-lived intangible assets	245			245
Total intangible assets, net	$	1,115		$	1,247

Amortization expense totaled $0.1 million, $0.1 million and $0.1 million for the fiscal years ended June 30, 2018, 2017 and 2016, respectively. As of June 30, 2018, the remaining weighted-average amortization period for definite-lived intangible assets was 6.75 years. Annual estimated amortization expense is expected to approximate $0.1 million for each of the five succeeding fiscal years.