FAIR VALUE MEASUREMENTS (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Fair Value, Assets Measured on Recurring and Nonrecurring Basis [Table Text Block]

The following table summarizes the values of our investments measured at fair value on a recurring basis within the fair value hierarchy as of the dates indicated (in thousands):

	Level 1		Level 2		Level 3		Investments Measured at NAV(1)		Total
As of September 30, 2018:
Investments in trading securities	$	68,567	$	—	$	—	$	2,436	$	71,003
Total assets measured at fair value	$	68,567	$	—	$	—	$	2,436	$	71,003
As of December 31, 2017:
Investments in trading securities	$	48,998	$	—	$	—	$	2,326	$	51,324
Total assets measured at fair value	$	48,998	$	—	$	—	$	2,326	$	51,324
(1) Comprised of certain investments measured at fair value using net asset value (“NAV”) as a practical expedient. The fair value amounts presented in this table are intended to permit reconciliation of the fair value hierarchy to the amounts presented on our Condensed Consolidated Balance Sheets.