Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Measurements [Abstract]

Company's Financial Instruments Carried at Fair Value Using Lowest Level of Input

The following tables set forth the Company's financial instruments carried at fair value using the lowest level of input as of December 31, 2014 and 2013:

	December 31, 2014
	Quoted Prices in Active Markets for Identical Items (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Money market funds	$	9,574	$	—	$	—	$	9,574
Restricted cash		—		201		—		201
Total assets	$	9,574	$	201	$	—	$	9,775

	December 31, 2013
	Quoted Prices in Active Markets for Identical Items (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Assets:
Money market funds	$	13,797	$	—	$	—	$	13,797
Restricted cash		—		322		—		322
Total assets	$	13,797	$	322	$	—	$	14,119