Note 4 - Investments

9 Months Ended

Sep. 30, 2021

Notes to Financial Statements

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

4. Investments

The aggregate fair values of investment securities along with unrealized gains and losses determined on an individual investment security basis and included in other comprehensive income are as follows:

	September 30, 2021
	(in thousands)
	Amortized Cost		Unrealized Gain		Unrealized (Loss)			Fair Value		Short-term investments		Long-term investments
Commerical Paper	$	28,712	$	-	$	(12	)	$	28,700	$	28,700	$	-
Corporate Bonds		59,455		-		(41	)		59,414		29,272		30,142
Total Investments	$	88,167	$	-	$	(53	)	$	88,114	$	57,972	$	30,142

The following table summarizes the contractual maturities of the Company’s available-for-sale investments, as of September 30, 2021:

	Amortized Cost		Fair Value
Mature in less than one year	$	57,997	$	57,972
Mature in one to two years		30,170	$	30,142
Total	$	88,167	$	88,114

Actual maturities may differ from contractual maturities, because certain borrowers have the right to call or prepay certain obligations. There were no sales of investments or gross realized gains or losses for the three and nine months ended September 30, 2021 and September 30, 2020, respectively.