Cash and Cash Equivalents and Investments (Tables)

9 Months Ended

Sep. 30, 2022

Cash and Cash Equivalents and Investments

Schedule of short term-investments

			Estimated		Carrying
September 30, 2022	Cost		Fair Value		Value
		(in thousands)
Short-term investments:
Trading securities	$	59	$	35	$	35
Total trading securities		59		35		35
Total short-term investments	$	59	$	35	$	35
December 31, 2021
Short-term investments:
Trading securities	$	59	$	67	$	67
Total trading securities		59		67		67
Total short-term investments	$	59	$	67	$	67