CONCENTRATION OF RISK

6 Months Ended

Jun. 30, 2024

19. CONCENTRATION OF RISK:

Revenues and accounts receivable from the Company's largest customers were as follows (in thousands):


	% of Total Revenue for the Three Months Ended June 30,		% of Total Revenue for the Six Months Ended June 30,		Accounts Receivable as of
Customer	2024	2023	2024	2023	June 30, 2024
A	48%	36%	45%	33%	$	11,815
B	23%	22%	24%	24%	$	36,140
C	14%	13%	15%	17%	$	41,170
D	5%	14%	5%	11%	$	9,497

Revenues from outside of North America represented approximately 98% of consolidated revenue for both three-month periods ended June 30, 2024 and 2023, and 98% and 97% for the six months ended June 30, 2024 and 2023, respectively. Revenues by geographic area are as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
Country	2024		2023		2024		2023
South Korea	$	108,194	$	82,029	$	210,592	$	148,089
China		45,236		57,520		102,706		114,947
Japan		1,256		1,509		2,510		3,156
Other non-U.S. locations		273		1,978		1,938		3,315
Total non-U.S. locations		154,959		143,036		317,746		269,507
United States		3,546		3,529		6,018		7,525
Total revenue	$	158,505	$	146,565	$	323,764	$	277,032

The Company attributes revenue to different geographic areas on the basis of the location of the customer.

Property and equipment, net by geographic area are as follows (in thousands):


	June 30, 2024		December 31, 2023
United States	$	120,681	$	118,250
Ireland		50,109		42,203
Other		14,684		14,697
Total property and equipment, net	$	185,474	$	175,150

Substantially all chemical materials were purchased from one supplier. See Note 13 for further explanation.