Investment Securities (Notes)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

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

Investment Securities

    Our investment securities currently consist of short-term and long-term corporate bonds. Our investment securities are considered available-for-sale and are “investment grade” and carried at fair value. Available-for-sale securities are recorded at fair value, and unrealized holding gains and losses are recorded, net of tax, as a component of accumulated other comprehensive income. Unrealized losses on available-for-sale securities are charged against net earnings when a decline in fair value is determined to be other than temporary. Our management reviews several factors to determine whether a loss is other than temporary, such as the length and extent of the fair value decline, the financial condition and near term prospects of the issuer, and for equity investments, our intent and ability to hold the security for a period of time sufficient to allow for any anticipated recovery in fair value. The amortized cost of the debt securities are adjusted for the amortization of premiums computed under the effective interest method. Such amortization is included in investment income in other income (expense), net on our condensed consolidated statements of operations. There have been no realized gains or losses on their disposal. Realized gains and losses are accounted for on the specific identification method. The scheduled maturities of the debt securities are between 2021 and 2024. All short-term investment securities are callable within one year.

    Our short investment securities consisted of the following (in thousands):

	As of March 31, 2021
	Amortized Cost		Unrealized Holding Gains (Losses)		Fair Value
Short-term corporate bonds	$	11,693	$	—	$	11,693
Long-term corporate bonds	18,834		—		18,834
Total investment securities	$	30,527	$	—	$	30,527
	As of December 31, 2020
	Amortized Cost		Unrealized Holding Gains (Losses)		Fair Value
Short-term corporate bonds	$	14,687	$	—	$	14,687
Long-term corporate bonds	12,974		—		12,974
Total investment securities	$	27,661	$	—	$	27,661