Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Mar. 31, 2021

A summary of the carrying amount of goodwill attributable to each segment, as well as the changes in such carrying amounts, is as follows:


(in thousands)	Metal Cutting		Infrastructure		Total
Gross goodwill	$	448,241	$	633,211	$	1,081,452
Accumulated impairment losses	(177,661)		(633,211)		(810,872)
Balance as of June 30, 2020	$	270,580	$	—	$	270,580

Activity for the nine months ended March 31, 2021:
Change in gross goodwill due to translation	5,468		—		5,468



Gross goodwill	453,709		633,211		1,086,920
Accumulated impairment losses	(177,661)		(633,211)		(810,872)
Balance as of March 31, 2021	$	276,048	$	—	$	276,048

The components of our other intangible assets were as follows:


	Estimated Useful Life (in years)	March 31, 2021				June 30, 2020
(in thousands)		Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization

Technology-based and other	4 to 20	$	33,373	$	(23,977)		$	32,713	$	(22,612)
Customer-related	10 to 21	182,840		(95,662)			181,408		(88,112)
Unpatented technology	10 to 30	31,896		(19,918)			31,586		(17,890)
Trademarks	5 to 20	13,229		(9,763)			13,087		(8,772)
Trademarks	Indefinite	11,669		—			11,160		—
Total		$	273,007	$	(149,320)		$	269,954	$	(137,386)