Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the three months ended March 31, 2021, by reportable business segment, were as follows:

	FMT		HST		FSDP		IDEX
Goodwill	$	670,442	$	1,012,448	$	413,315	$	2,096,205
Accumulated goodwill impairment losses	(20,721)		(149,820)		(30,090)		(200,631)
Balance at December 31, 2020	649,721		862,628		383,225		1,895,574
Foreign currency translation	(5,737)		(13,461)		(6,157)		(25,355)
Acquisitions	58,980		—		—		58,980
Disposition of businesses	—		(129)		—		(129)
Acquisition adjustments	(405)		—		—		(405)
Balance at March 31, 2021	$	702,559	$	849,038	$	377,068	$	1,928,665

Schedule of Gross Carrying Value and Accumulated Amortization For Each Major Class of Intangible Asset

The following table provides the gross carrying value and accumulated amortization for each major class of intangible asset at March 31, 2021 and December 31, 2020:

	At March 31, 2021							At December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net		Weighted Average Life	Gross Carrying Amount		Accumulated Amortization		Net
Amortized intangible assets:
Patents	$	3,106	$	(1,811)	$	1,295	10	$	3,030	$	(1,740)	$	1,290
Trade names	138,089		(74,118)		63,971		16	130,793		(72,685)		58,108
Customer relationships	337,646		(122,043)		215,603		13	318,350		(120,294)		198,056
Unpatented technology	122,561		(52,725)		69,836		13	122,287		(55,131)		67,156
Other	700		(665)		35		10	700		(647)		53
Total amortized intangible assets	602,102		(251,362)		350,740			575,160		(250,497)		324,663
Indefinite-lived intangible assets:
Banjo trade name	62,100		—		62,100			62,100		—		62,100
Akron Brass trade name	28,800		—		28,800			28,800		—		28,800
Total intangible assets	$	693,002	$	(251,362)	$	441,640		$	666,060	$	(250,497)	$	415,563