Quarterly report pursuant to Section 13 or 15(d)

MARKETABLE SECURITIES (Details)

v3.20.2
MARKETABLE SECURITIES (Details) - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Fair Value [Member]    
Certificates of deposit $ 8,304,000 $ 8,959,000
Fixed income mutual funds 9,592,000 7,879,000
Corporate bonds and notes 3,375,000 8,892,000
Total marketable securities 21,271,000 25,730,000
Cost Basis [Member]    
Certificates of deposit 8,282,000 8,953,000
Fixed income mutual funds 9,616,000 7,878,000
Corporate bonds and notes 3,371,000 8,813,000
Total marketable securities 21,269,000 25,644,000
Gross Unrealized Gains [Member]    
Certificates of deposit 22,000 6,000
Fixed income mutual funds 0 1,000
Corporate bonds and notes 26,000 112,000
Total marketable securities 48,000 119,000
Gross Unrealized Losses [Member]    
Certificates of deposit 0 0
Fixed income mutual funds (24,000) 0
Corporate bonds and notes (22,000) (33,000)
Total marketable securities $ (46,000) $ (33,000)