Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of property, plant and equipment

	Useful lives in years from	December 31,
	date of acquisition	2011		2012
		$000		$000
Leasehold improvements	5 to 15 yrs	844		867
Research and laboratory equipment	3 to 5 yrs	6,251		5,519
Office equipment and furniture	3 to 5 yrs	1,273		1,325
		8,368		7,711
Less: accumulated depreciation and amortization		(8,201	)	(7,582	)
		167		129

- Definition

Tabular disclosure of the useful life and salvage value of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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