INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS

INTANGIBLE ASSETSThe Company had goodwill in the amount of $523,998 and $447,995 as of December 31, 2019 and 2018 subject to the provisions of ASC 350, “Intangibles-Goodwill and Other.” The increase in goodwill is primarily the result of the acquisitions of Chemogas and Zumbro, partially offset by a reduction of goodwill related to an insignificant sale of a portion of the Company's business,

with the remaining change due to foreign exchange translation adjustments. Refer to Note 2, "Significant Acquisitions and Divestitures," for more information.

As of December 31, 2019 and 2018, the Company had identifiable intangible assets as follows:

		2019				2018
	Amortization Period (In years)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer relationships & lists	10-20	$	239,578	$	139,863	$	192,185	$	122,545
Trademarks & trade names	2-17	43,102		20,477		39,934		16,755
Developed technology	5-12	20,206		11,008		13,338		8,604
Other	3-18	20,962		8,576		18,333		6,481
		$	323,848	$	179,924	$	263,790	$	154,385

Amortization of identifiable intangible assets was $25,789, $24,988 and $26,784 for 2019, 2018 and 2017, respectively. Assuming no change in the gross carrying value of identifiable intangible assets, the estimated amortization expense is approximately $27,020 in 2020, $23,246 in 2021, $21,327 in 2022, $18,710 in 2023, and $9,759 in 2024. At December 31, 2019 and 2018, there were no identifiable intangible assets with indefinite useful lives as defined by ASC 350, “Intangibles-Goodwill and Other.” Identifiable intangible assets are reflected in the Company’s consolidated balance sheets under Intangible assets with finite lives, net. There were no changes to the useful lives of intangible assets subject to amortization in 2019 and 2018.

The Federal Insecticide, Fungicide and Rodenticide Act, (“FIFRA”), a health and safety statute, requires that certain products within our specialty products segment must be registered with the U.S. Environmental Protection Agency (the "EPA") because they are considered pesticides. Costs of such registrations are included as other in the table above.