FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2015

Fair Value Disclosures [Abstract]

Summary of Financial Instruments of Company at Fair Value Based on Valuation Approach Applied to each Class of Security

The following table summarizes the financial instruments of the Company at fair value based on the valuation approach applied to each class of security as of December 31, 2015 (in thousands):

	Fair Value Measurement at Reporting Date Using
	Carrying Value at December 31, 2015		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds	$	81,541	$	81,541	$	—	$	—
Total assets	$	81,541	$	81,541	$	—	$	—

The following table summarizes the financial instruments of the Company at fair value based on the valuation approach applied to each class of security at December 31, 2014 (in thousands):

	Fair Value Measurement at Reporting Date Using
	Carrying Value at December 31, 2014		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Assets:
Cash equivalents:
Money market funds	$	44,499	$	44,499	$	—	$	—
Total assets	$	44,499	$	44,499	$	—	$	—