Goodwill and intangible assets are as follows:


							Initial
	September 30,			December 31,			Useful Life
	2023			2022			(in years)
	(in thousands)
Goodwill	$	462,630		$	460,415		indefinite

Other intangible assets:
Trade names (indefinite-lived)	$	225,018		$	225,018		indefinite

Customer relationships and customer-related assets		340,047			340,047		<1-15
Trade name (amortizable)		22,200			22,200		15
Developed technology		20,500			20,500		3-14
Non-compete agreement		3,538			3,538		2-5
Software license		590			590		2
Less: Accumulated amortization		(184,643	)		(164,841	)

Subtotal		202,232			222,034

Other intangible assets, net	$	427,250		$	447,052

Goodwill at December 31, 2022	$	460,415
Increase relating to Martin Acquisition net working capital payment		744
Net other measurement period changes in Martin Acquisition		1,471

Goodwill at September 30, 2023	$	462,630

Amortization expense relating to amortizable intangible assets for the three months ended September 30, 2023 and October 1, 2022, was $6.5 million and $5.8 million, respectively. Amortization expense relating to amortizable intangible assets for the nine months ended September 30, 2023 and October 1, 2022, was $19.8 million and $19.7 million, respectively.

We perform our annual goodwill and indefinite-lived intangible asset impairment testing as of the first day of our fiscal fourth quarter of each year, and at interim periods if needed based on occurrence of triggering events. During the three and nine months ended September 30, 2023, we did not identify any events which we believe would trigger the need for tests for impairments of our indefinite-lived intangibles assets prior to our annual assessment date. However, in 2023, we have experienced challenging macro-economic conditions in the markets for our products of our Western segment. Although experiencing some improvement in the third quarter of 2023, should these conditions persist, when combined with potential increases in discount rates due to the rising interest rate environment in 2023, no assurances can be given that any future tests for impairment will indicate that it is more likely than not that the fair values of our indefinite-lived intangible assets will exceed their carrying values for the remainder of 2023.

As of September 30, 2023 and December 31, 2022, the carrying value of our Southeast reporting unit goodwill is $228.3 million and $228.3 million, respectively. As of September 30, 2023 and December 31, 2022, the carrying value of our Western reporting unit goodwill is $234.3 million and $232.1 million, respectively.