Cash and Cash Equivalents and Short-Term Investments (Tables)

9 Months Ended

Sep. 30, 2021

Cash and Cash Equivalents and Short-Term Investments

Schedule of short term-investments

			Estimated		Carrying
September 30, 2021	Cost		Fair Value		Value
		(in thousands)
Investments:
Short-term:
Trading securities	$	59	$	102	$	102
Total trading securities		59		102		102
Total short term	$	59	$	102	$	102
December 31, 2020
Investments:
Short-term:
Trading securities	$	59	$	79	$	79
Total trading securities		59		79		79
Total short term	$	59	$	79	$	79