Investment Securities (Notes)

6 Months Ended

Jun. 30, 2018

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 (loss). 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 on our condensed consolidated statements of income. 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 2018 and 2020. All short-term investment securities are all callable within one year.

Our short and long-term investment securities consisted of the following (in thousands):

	As of June 30, 2018
	Amortized Cost		Unrealized Holding Gains (Losses)		Fair Value
Short-term corporate bonds	$	18,069	$	—	$	18,069
Long-term corporate bonds	5,947		—		5,947
Total investment securities	$	24,016	$	—	$	24,016
	As of December 31, 2017
	Amortized Cost		Unrealized Holding Gains (Losses)		Fair Value
Short-term corporate bonds	$	10,061	$	—	$	10,061
Long-term corporate bonds	14,579		—		14,579
Total investment securities	$	24,640	$	—	$	24,640