GOODWILL AND INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2022

Disclosure Of Goodwill And Intangible Assets [Abstract]

GOODWILL AND INTANGIBLE ASSETS

7. GOODWILL AND INTANGIBLE ASSETS

	June 30, 2022			December 31, 2021
	US$000			US$000
Cost
Goodwill		79,182			79,182
Development costs		124,310			121,173
Patents and licenses		8,718			8,707
Other		33,254			33,198
Total cost		245,464			242,260
Less accumulated amortization and impairment		(206,721	)		(206,279	)
Carrying amount		38,743			35,981

The increase in gross intangible assets during the six-month period ended June 30, 2022 of US$3,204,000 is due to capital expenditures of US$3,219,000 (six-months ended June 30, 2021: US$3,294,000) offset by foreign exchange differences of US$15,000 (six-months ended June 30, 2021: US$25,000).