GOODWILL AND OTHER INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in goodwill by segment for the six months ended June 30, 2022 were as follows (in thousands):


	Environmental Services		Safety-Kleen Sustainability Solutions		Totals
Balance at January 1, 2022	$	1,085,534	$	141,508	$	1,227,042
Increase from current period acquisition	—		29,375		29,375
Measurement period adjustments from prior period acquisition	(6,453)		—		(6,453)
Decrease from disposition of business	(4,412)		—		(4,412)
Foreign currency translation	(659)		(238)		(897)
Balance at June 30, 2022	$	1,074,010	$	170,645	$	1,244,655

The decrease from disposition of business relates to the divestiture discussed in Note 5, "Disposition of Business." The Company assesses goodwill on an annual basis as of December 31 or at an interim date when events or changes in the business environment (“triggering events”) would more likely than not reduce the fair value of a reporting unit below its carrying value. During the period ended June 30, 2022, no such triggering events were identified.

As of June 30, 2022 and December 31, 2021, the Company's intangible assets consisted of the following (in thousands):


	June 30, 2022						December 31, 2021
	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
Permits	$	189,675	$	105,957	$	83,718	$	187,519	$	102,408	$	85,111
Customer and supplier relationships	589,192		229,277		359,915		576,474		214,776		361,698
Other intangible assets	95,688		25,100		70,588		94,271		19,359		74,912
Total amortizable permits and other intangible assets	874,555		360,334		514,221		858,264		336,543		521,721
Trademarks and trade names	123,033		—		123,033		123,191		—		123,191
Total permits and other intangible assets	$	997,588	$	360,334	$	637,254	$	981,455	$	336,543	$	644,912

Amortization expense of permits, customer and supplier relationships and other intangible assets was $12.3 million and $24.5 million in the three and six months ended June 30, 2022, respectively. Amortization expense of permits, customer and supplier relationships and other intangible assets was $7.8 million and $15.4 million in the three and six months ended June 30, 2021, respectively.

The expected amortization of the net carrying amount of finite-lived intangible assets at June 30, 2022 was as follows (in thousands):


Years Ending December 31,	Expected Amortization
2022 (six months)	$	24,966
2023	45,728
2024	40,256
2025	39,051
2026	37,167
Thereafter	327,053
	$	514,221