Prepaid Expenses and Other Current Assets (Tables)

12 Months Ended

Dec. 31, 2012

Prepaid Expenses and Other Current Assets

Schedule of prepaid expenses and other current assets

	December 31,
	2011	2012
	$000	$000
Research and development tax credit receivable	544	1,033
Prepayments	317	358
Deposits	—	153
Other current assets	208	55
	1,069	1,599