CONCENTRATION OF RISK

3 Months Ended

Mar. 31, 2025

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 March 31,		Accounts Receivable as of
Customer	2025	2024	March 31, 2025
A	36%	41%	$	47,024
B	23%	16%	$	10,607
C	20%	25%	$	33,195

Revenues from outside of North America represented approximately 96% and 99% of consolidated revenue for the three months ended March 31, 2025 and 2024, respectively. Revenues by geographic area are as follows (in thousands):


	Three Months Ended March 31,
Country	2025		2024
South Korea	$	87,333	$	102,398
China		71,092		57,470
Japan		413		1,254
Other non-U.S. locations		454		1,665
Total non-U.S. locations		159,292		162,787
United States		6,985		2,472
Total revenue	$	166,277	$	165,259

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):


	March 31, 2025		December 31, 2024
United States	$	117,744	$	117,496
Ireland		64,436		63,346
Other		14,083		14,397
Total property and equipment, net	$	196,263	$	195,239

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