MARKETABLE SECURITIES (Details) - USD ($) |
Mar. 31, 2022 |
Dec. 31, 2021 |
|---|---|---|
| Fair Value [Member] | ||
| OtherInvestmentReadilyMarketableLineItems [Line Items] | ||
| Fixed income mutual funds | $ 13,899,000 | $ 14,325,000 |
| Corporate bonds and notes | 177,000 | 801,000 |
| Total marketable securities | 14,076,000 | 15,126,000 |
| Cost Basis [Member] | ||
| OtherInvestmentReadilyMarketableLineItems [Line Items] | ||
| Fixed income mutual funds | 14,389,000 | 14,462,000 |
| Corporate bonds and notes | 192,000 | 813,000 |
| Total marketable securities | 14,581,000 | 15,275,000 |
| Gross Unrealized Gains [Member] | ||
| OtherInvestmentReadilyMarketableLineItems [Line Items] | ||
| Fixed income mutual funds | ||
| Corporate bonds and notes | ||
| Total marketable securities | ||
| Gross Unrealized Losses [Member] | ||
| OtherInvestmentReadilyMarketableLineItems [Line Items] | ||
| Fixed income mutual funds | (490,000) | (137,000) |
| Corporate bonds and notes | (15,000) | (12,000) |
| Total marketable securities | $ (505,000) | $ (149,000) |