Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2014

Accrued Liabilities

Accrued liabilities at September 30, 2014 and December 31, 2013, consisted of the following (in thousands):

	September 30,		December 31,
	2014		2013
Accrued compensation and related costs	$	2,956	$	2,527
Accrued inventory costs		4,610		3,553
Accrued professional services		2,928		2,722
Other accrued expenses		2,053		1,011
Total accrued liabilities	$	12,547	$	9,813