Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Schedule of assets measured at fair value on a recurring basis

	Fair Value Measurement at March 31, 2016 Using:
	Quoted Prices in Active Markets for  Identical Assets		Significant Other  Observable Inputs		Significant  Unobservable  Inputs
	(Level 1)		(Level 2)		(Level 3)
Corporate debt securities	$	869	$	-	$	-
Money market funds (included in cash and cash equivalents)		43,095
Total	$	43,964	$	-	$	-

	Fair Value Measurement at December 31, 2015 Using:
	Quoted Prices in Active Markets for  Identical Assets		Significant Other  Observable Inputs		Significant  Unobservable  Inputs
	(Level 1)		(Level 2)		(Level 3)
Corporate debt securities	$	869	$	-	$	-
Money market funds (included in cash and cash equivalents)		43,027
Total	$	43,896	$	-	$	-