INVESTMENTS HELD-TO-MATURITY (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
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| Investments [Abstract] | ||||
| Held-to-maturity, amortized cost | $ 0 | $ 0 | $ 0 | $ 0 |
| Interest and investment income | $ 1,000 | $ 42,000 | $ 65,000 | $ 220,000 |
| X | ||||||||||
- Definition Amount of investment in debt security measured at amortized cost (held-to-maturity). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount after accretion (amortization) of discount (premium), and investment expense, of interest income and dividend income on nonoperating securities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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