Goodwill and Other Intangible Assets, Net (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Reconciliation of the change in the carrying value of goodwill

A reconciliation of the change in the carrying amount of goodwill by reportable segment is as follows:

	Diversified Industrial		Energy		Financial Services		Corporate and Other		Total
Balance as of December 31, 2019
Gross goodwill	$	180,855	$	67,143	$	6,515	$	81	$	254,594
Accumulated impairments	(40,178)		(64,790)		—		—		(104,968)
Net goodwill	140,677		2,353		6,515		81		149,626
Acquisitions (a)	2,300		—		—		—		2,300
Currency translation adjustments	14		—		—		—		14
Balance as of September 30, 2020
Gross goodwill	183,169		67,143		6,515		81		256,908
Accumulated impairments	(40,178)		(64,790)		—		—		(104,968)
Net goodwill	$	142,991	$	2,353	$	6,515	$	81	$	151,940

(a)    Related to the acquisition of Metallon. See Note 4 - "Acquisitions."

Summary of Intangible Assets

A summary of Other intangible assets, net is as follows:

	September 30, 2020						December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net		Gross Carrying Amount		Accumulated Amortization		Net
Customer relationships	$	213,835	$	116,677	$	97,158	$	216,428	$	109,701	$	106,727
Trademarks, trade names and brand names	51,151		19,464		31,687		51,414		18,469		32,945
Developed technology, patents and patent applications	33,598		19,985		13,613		31,984		17,176		14,808
Other	17,417		16,201		1,216		17,963		13,850		4,113
Total	$	316,001	$	172,327	$	143,674	$	317,789	$	159,196	$	158,593

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Based on gross carrying amounts at September 30, 2020, the Company's estimate of amortization expense for identifiable intangible assets for the years ending December 31, 2020 through 2024 is presented in the table below.

	Year Ending December 31,
	2020		2021		2022		2023		2024
Estimated amortization expense	$	20,388	$	15,911	$	14,398	$	13,030	$	11,793