Intangible Assets

3 Months Ended

Sep. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

3.	Intangible Assets

The reconciliation of intangible assets for the three months ended September 30, 2014 and for the year ended June 30, 2014 was as follows (in thousands):


	Three Months Ended September 30, 2014			Year Ended June 30, 2014
Patented technologies
Gross carrying amount at beginning of period	$	41,689		$	38,941
Foreign currency translation adjustments		(1,191	)		2,748

Gross carrying amount at end of period		40,498			41,689

Accumulated amortization at beginning of period		(38,924	)		(35,511	)
Amortization expense		(196	)		(778	)
Foreign currency translation adjustments		1,150			(2,635	)

Accumulated amortization at end of period		(37,970	)		(38,924	)

Net book value at end of period	$	2,528		$	2,765

The Company amortizes its intangible assets with finite lives on a straight-line basis over their respective estimated useful lives. Amortization of intangible assets totaled $196,000 and $192,000 for the three months ended September 30, 2014 and 2013, respectively. The carrying value of intangible assets at September 30, 2014 of $2.5 million (approximately $1.7 million attributable to the Durasert technology and $0.8 million attributable to the BioSilicon™ technology (including Tethadur)) is expected to be amortized on a straight-line basis over the remaining estimated useful life of 3.25 years, or approximately $778,000 per year.