Note 10. Goodwill and Other Intangible Assets

Goodwill

The following table presents the changes in goodwill by operating segments during the year ended July 2, 2016 (in millions):



		Optical Communications		Commercial Lasers			Total
Balance as of June 28, 2014 ⁽¹⁾		$	—	$	5.9		$	5.9
	Currency translation	—		(0.3		)	(0.3		)
Balance as of June 27, 2015		$	—	$	5.6		$	5.6
	Currency translation	$	—	$	(0.2	)	$	(0.2	)
Balance as of July 2, 2016		$	—	$	5.4		$	5.4

(1) Refer to “Note 6. Mergers and Acquisitions” for more information.

Impairment of Goodwill

We review goodwill for impairment during the fourth quarter of each fiscal year or more frequently if events or circumstances indicate that an impairment loss may have occurred. In the fourth quarter of fiscal 2016, we completed the annual impairment test of goodwill, which indicated there was no goodwill impairment. During the fiscal year ended July 2, 2016, there have been no events or circumstances that have required us to perform an interim assessment of goodwill for impairment.

Acquired Developed Technology and Other Intangibles

The following tables present details of our acquired developed technology and other intangibles (in millions):



As of July 2, 2016	Gross Carrying Amount		Accumulated Amortization			Net
Acquired developed technology	$	103.0	$	(88.9	)	$	14.1
Other	9.4		(9.0		)	0.4
Total Intangibles	$	112.4	$	(97.9	)	$	14.5



As of June 27, 2015	Gross Carrying Amount		Accumulated Amortization			Net
Acquired developed technology	$	103.2	$	(82.2	)	$	21.0
Other	9.4		(8.6		)	0.8
Total Intangibles	$	112.6	$	(90.8	)	$	21.8

During fiscal 2016, 2015 and 2014, we recorded $7.2 million, $8.0 million, and $9.3 million, respectively, of amortization related to acquired developed technology and other intangibles. The following table presents details of our amortization (in millions):



	Years Ended
	July 2, 2016		June 27, 2015		June 28, 2014
Cost of sales	$	6.8	$	7.6	$	9.0
Operating expense	0.4		0.4		0.3
Total	$	7.2	$	8.0	$	9.3

Based on the carrying amount of acquired developed technology and other intangibles as of July 2, 2016, and assuming no future impairment of the underlying assets, the estimated future amortization is as follows (in millions):



Fiscal Years
2017	$	6.7
2018	2.8
2019	2.6
2020	2.4
Thereafter	—
Total amortization	$	14.5