FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2018

FAIR VALUE MEASUREMENTS

Schedule of assets and liabilities of the entity measured at fair value on a recurring basis

Assets and liabilities of the Company measured at fair value on a recurring basis as of March 31, 2018 and December 31, 2017 are summarized as follows (in thousands):

			March 31, 2018
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	380	$	380
Money market funds		2,388		—		2,388
Short term investments		471		1,757		2,228
Commercial paper		—		50,549		50,549
Interest rate swap		—		186		186
Total assets and liabilities measured at fair value	$	2,859	$	52,872	$	55,731

	December 31, 2017
			Significant Other
	Quoted Prices in		Observable
	Active Markets		Inputs
Description	(Level 1)		(Level 2)		Total
Certificates of deposit	$	—	$	391	$	391
Money market funds		2,894		—		2,894
Short term investments		555		6,521		7,076
Commercial paper		—		49,954		49,954
Interest rate swap		—		52		52
Total assets and liabilities measured at fair value	$	3,449	$	56,918	$	60,367