XML 53 R37.htm IDEA: XBRL DOCUMENT v3.20.2
Marketable Securities (Details)
$ in Thousands
Jun. 30, 2020
USD ($)
security
Marketable Securities [Line Items]  
Amortized Cost (maturing in one year or less) $ 47,779
Gross Unrealized Gain (maturing in one year or less) 10
Fair Value (maturing in one year or less) $ 47,789
Investment-grade marketable securities in a continuous unrealized loss position for more than twelve months | security 0
Accrued interest $ 200
U.S. government obligations  
Marketable Securities [Line Items]  
Amortized Cost (maturing in one year or less) 4,073
Fair Value (maturing in one year or less) 4,073
Corporate debt securities  
Marketable Securities [Line Items]  
Amortized Cost (maturing in one year or less) 43,706
Gross Unrealized Gain (maturing in one year or less) 10
Fair Value (maturing in one year or less) $ 43,716