Fair Value Measurement (Tables)

3 Months Ended

Mar. 31, 2014

Schedule of Fair Value Assets Measured on Recurring Basis

The following table presents the balances of assets measured at fair value based on Level 1 inputs on a recurring basis as of March 31, 2014 and December 31, 2013:

	March 31, 2014		December 31, 2013
	(in thousands)
Cash equivalents	$	4,201	$	4,200

Schedule of Fair Value, Valuation Techniques and Related Unobservable Inputs

The following table presents the fair value, valuation techniques and related unobservable inputs for these Level 3 measurements as of March 31, 2014 and December 31, 2013:

	Fair value measurement (Level 3) (in thousands)				Valuation technique	Unobservable input	Range
	March 31, 2014(a)		December 31, 2013				December 31, 2013
Redeemable common stock	$	34,950	$	18,415	Probability Weighted Expected Return Method	Discount rate		15.3	%
						Lack of marketability per common share		14.9	%