FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value

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

	March 31, 2019
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents	$	12,401	$	10,062	$	—	$	22,463
Marketable securities:
Municipal bonds	$	—	$	42,759	$	—	$	42,759
Corporate bonds	—		49,045		—		49,045
Total marketable securities	$	—	$	91,804	$	—	$	91,804
Investments in privately-held companies (1)	$	—	$	—	$	3,390	$	3,390

⁽¹⁾ Included in other long-term assets.

	December 31, 2018
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents	$	10,155	$	10,000	$	—	$	20,155
Marketable securities:
Municipal bonds	$	—	$	44,705	$	—	$	44,705
Corporate bonds	—		48,296		—		48,296
Total marketable securities	$	—	$	93,001	$	—	$	93,001
Investments in privately-held companies (1)	$	—	$	—	$	3,390	$	3,390

⁽¹⁾ Included in other long-term assets.