Investments (Tables)

3 Months Ended

Mar. 31, 2021

Investments

Schedule of cash and cash equivalents andshort and long-term investments

	March 31, 2021			December 31, 2020
Cash and cash equivalents:
Cash deposits	$	22,007		$	16,628
Money market funds		3,695			4,822
Commercial paper		3,725			1,000
Total cash and cash equivalents	$	29,427		$	22,450
Short-term investments:
Commercial paper (held-to-maturity)	$	5,329		$	5,178
Bonds (held-to-maturity)		13,086			14,101
Allowance for credit losses		(22	)		(21	)
Total short-term investments	$	18,393		$	19,258
Long-term investments:
Mutual funds (available for sale)	$	591		$	563
Bonds (held-to-maturity)		36,012			41,619
Allowance for credit losses		(34	)		(52	)
Equity securities (available for sale)		4,103			4,077
Total long-term investments	$	40,672		$	46,207
Total cash, cash equivalents and short and long-term investments	$	88,492		$	87,915

Schedule of investments, held-to-maturity securities

Held-to-Maturity Bonds
Credit Quality Indicators	Asset Backed Bonds		Fed Govt. Bonds/Notes		Municipal Bonds		Corporate Bonds		Totals
AAA/AA/A	$	245	$	3,159	$	639	$	32,558	$	36,601
BBB/BB		-		-		-		12,497		12,497
TOTAL	$	245	$	3,159	$	639	$	45,055	$	49,098

Schedule of gross unrealized gains and losses on investments

				Gross Unrealized
	Level	Cost		Gains		Losses			Fair Value
As of March 31, 2021:
Money market	1		3,695	$	-	$	-		$	3,695
Commercial paper	2		9,054	$	-	$	-		$	9,054
Bonds	2		49,098	$	306	$	(28	)	$	49,376
Mutual funds	1		609	$	-	$	(18	)	$	591
Equity investments	2		5,675	$	-	$	(1,572	)	$	4,103
As of December 31, 2020:
Money Market	1		4,822	$	-	$	-		$	4,822
Commercial paper	2		6,178	$	-	$	-		$	6,178
Bonds	2		55,720	$	505	$	(44	)	$	56,181
Mutual funds	1		599	$	-	$	(36	)	$	563
Equity investments	2		5,675	$	-	$	(1,598	)	$	4,077