Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2020

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale and Equity Securities

The following tables show the Company’s available-for-sale securities’ adjusted cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category as of June 30, 2020 and December 31, 2019, respectively:

	June 30, 2020
Marketable Securities:	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value
Money market and mutual funds	$	98,024	$	824	$	—		$	98,848
Corporate bonds	8,720		180		(8		)	8,892
Government securities - U.S.	26,424		317		(1		)	26,740
Other fixed-income securities	1,867		33		—			1,900
Total	$	135,035	$	1,354	$	(9	)	$	136,380

	December 31, 2019
Marketable Securities:	Adjusted Cost		Unrealized Gains		Unrealized Losses			Fair Value
Equity securities	$	4,234	$	170	$	—		$	4,404
Money market and mutual funds	38,028		771		—			38,799
Corporate bonds	4,021		77		—			4,098
Government securities - U.S.	5,341		110		(5		)	5,446
Other fixed-income securities	1,614		23		—			1,637
Total	$	53,238	$	1,151	$	(5	)	$	54,384

 

Schedule of Contractual Maturity Dates

The following table summarizes the estimated fair value of our investments in marketable debt securities, accounted for as available-for-sale debt securities and classified by the contractual maturity date of the securities as of June 30, 2020:

	Maturities
Marketable Debt Securities:	Less than 1 Year		1-5 Years		5-10 Years		Greater than 10 Years		Total
Corporate bonds	$	1,270	$	6,350	$	1,272	$	—	$	8,892
Government securities - U.S.	—		25,965		320		455		26,740
Other fixed-income securities	51		1,849		—		—		1,900
Total	$	1,321	$	34,164	$	1,592	$	455	$	37,532

Debt Securities, Available-for-sale, Unrealized Loss Position, Fair Value [Table Text Block]

Marketable Debt Securities:	Fair Value		Unrealized Losses
Corporate bonds	$	3,187	$	7
Other fixed-income securities	506		1
Total	$	3,693	$	8