Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value Measurements

Schedule of assets measured at fair value on recurring basis

	December 31, 2012 Fair Value Measurements
	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Cash equivalents:
Money market funds	$	29,179	$	—	$	—	$	29,179

	December 31, 2011 Fair Value Measurements
	Level 1		Level 2		Level 3		Total
	(in thousands)
Assets
Cash equivalents:
Money market funds	$	29,927	$	—	$	—	$	29,927