Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

Accrued Liabilities

Accrued liabilities at December 31, 2012 and 2011 consisted of the following (in thousands):

	December 31,
	2012		2011
Accrued compensation and related costs	$	2,692	$	2,027
Accrued inventory costs		2,352		1,417
Accrued contract and other accrued expenses		2,575		2,381
Total accrued liabilities	$	7,619	$	5,825