FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2018

Assets and Liabilities Measured at Fair Value

The Company’s assets and liabilities measured at fair value on a recurring basis were as follows:

	June 30, 2018
	Level 1		Level 2		Level 3		Total
Cash equivalents	$	28	$	32,009	$	—	$	32,037
Marketable securities:
Municipal bonds		—		55,374		—		55,374
Corporate bonds		—		43,918		—		43,918
Total marketable securities		—		99,292		—		99,292
Investments in privately-held companies(1)		—		—		2,060		2,060
(1) Included in other long-term assets in the unaudited condensed consolidated balance sheets.
	December 31, 2017
	Level 1		Level 2		Level 3		Total
Cash equivalents	$	2,720	$	40,051	$	—	$	42,771
Marketable securities:
Municipal bonds		—		32,848		—		32,848
Corporate bonds		—		28,621		—		28,621
Total marketable securities		—		61,469		—		61,469
Investments in privately-held companies(1)		—		—		1,030		1,030

  ⁽¹⁾ Included in other long-term assets in the unaudited condensed consolidated balance sheets.