Marketable Securities

3 Months Ended

Mar. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

Note 5 – Marketable Securities

Marketable securities classified as available-for-sale as of March 31, 2019 and December 31, 2018 were comprised of (in thousands): 

	March 31, 2019								December 31, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Amortized Cost		Gross Unrealized Gains		Gross  Unrealized Losses			Fair Value
Asset-backed securities	$	—	$	—	$	—	$	—	$	4,999	$	—	$	(2	)	$	4,997
Corporate debt securities		2,484		—		—		2,484		16,986		—		(3	)		16,983
Total	$	2,484	$	—	$	—	$	2,484	$	21,985	$	—	$	(5	)	$	21,980

Marketable Securities – Unrealized Losses

The primary objective of the Company’s investment policy is the preservation of capital; thus, the Company’s investment policy limits investments to certain types of instruments with high-grade credit ratings, places restrictions on maturities and concentrations in certain industries and requires the Company to maintain a certain level of liquidity.