Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2013

Payables And Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following at:

	December 31,				September 30,
	2011		2012		2013
	(In thousands)
					(Unaudited)
Salaries and bonuses	$	1,725	$	2,071	$	2,755
Clinical study costs		—		847		217
Accounting and legal		107		491		1,527
Other accrued liabilities		719		1,072		1,920
	$	2,551	$	4,481	$	6,419