Intangible Assets

9 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

3.	Intangible Assets

The reconciliation of intangible assets for the nine months ended March 31, 2015 and for the year ended June 30, 2014 was as follows (in thousands):


	Nine Months Ended March 31, 2015			Year Ended June 30, 2014

Patented technologies
Gross carrying amount at beginning of period	$	41,689		$	38,941
Foreign currency translation adjustments		(3,313	)		2,748


Gross carrying amount at end of period		38,376			41,689


Accumulated amortization at beginning of period		(38,924	)		(35,511	)
Amortization expense		(579	)		(778	)
Foreign currency translation adjustments		3,207			(2,635	)


Accumulated amortization at end of period		(36,296	)		(38,924	)


Net book value at end of period	$	2,080		$	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 $190,000 and $196,000 for the three months ended March 31, 2015 and 2014, respectively, and $579,000 and $582,000 for the nine months ended March 31, 2015 and 2014, respectively. The carrying value of intangible assets at March 31, 2015 of $2.1 million (approximately $1.5 million attributable to the Durasert™ technology and $0.6 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 2.75 years, or approximately $756,000 per year.