Investments (Tables)

6 Months Ended

Jun. 30, 2020

Investments

Schedule of securities classified as held-to-maturity

			Gross		Gross
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(in thousands)
Corporate bonds	$	2,005	$	5	$	—	$	2,010
Total investments as of June 30, 2020	$	2,005	$	5	$	—	$	2,010
Corporate bonds	$	2,790	$	—	$	(1)	$	2,789
Total investments as of December 31, 2019	$	2,790	$	—	$	(1)	$	2,789