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Goodwill and Other Intangible Assets
 9 Months Ended
Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets
Changes in the carrying amount of goodwill were as follows ($000):
Nine Months Ended March 31, 2024
NetworkingMaterials LasersTotal
Balance-beginning of period$1,036,204 $247,695 $3,228,801 $4,512,700 
Foreign currency translation457 224 (20,156)(19,475)
Balance-end of period$1,036,661 $247,919 $3,208,645 $4,493,225 
We test goodwill for impairment annually during the fourth quarter, or more frequently when events or changes in circumstances indicate that fair value is below carrying value.
As part of our annual assessment in the fourth quarter of fiscal 2023, we determined that the estimated fair value of our Lasers reporting unit exceeded its carrying value by approximately 10%. As of March 31, 2024, the carrying amount of goodwill within this reporting unit was $3.2 billion. The reporting unit’s estimated fair value is sensitive to changes in the significant assumptions used in the analysis including forecasted revenues and related gross margins. If the reporting unit does not perform to expected levels and realize the expected benefit from the multi-year synergy and site consolidation plans, or there are adverse changes in certain macroeconomic factors, the related goodwill may be at risk for impairment in the future.
The gross carrying amount and accumulated amortization of our intangible assets other than goodwill were as follows ($000):
March 31, 2024June 30, 2023
Gross
Carrying
Amount		Accumulated
Amortization		Net
Book
Value		Gross
Carrying
Amount		Accumulated
Amortization		Net Book Value
Technology$1,657,692 $(363,999)$1,293,693 $1,661,263 $(270,786)$1,390,477 
Trade Names438,471 (8,471)430,000 438,470 (8,279)430,191 
Customer Lists2,323,593 (460,984)1,862,609 2,333,360 (339,344)1,994,016 
Total$4,419,756 $(833,454)$3,586,302 $4,433,093 $(618,409)$3,814,684