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ACCOUNTING POLICIES (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Cash equivalents    
Cash equivalents $ 2,800 $ 2,800
Assets:    
Cash equivalents - Money market mutual funds 2,811 2,799
Equity securities, at fair value 414 823
Marketable Securities 3,838 10,308
Trading securities held in a "rabbi trust" 85 [1] 116
Total assets 7,148 14,046
Liabilities:    
Deferred compensation accrual "rabbi trust" 84 [2] 116
Total liabilities 84 116
Level 1    
Assets:    
Cash equivalents - Money market mutual funds 2,811 2,799
Equity securities, at fair value 414 823
Marketable Securities 3,838 10,308
Trading securities held in a "rabbi trust" 85 116
Total assets 7,148 14,046
Liabilities:    
Deferred compensation accrual "rabbi trust" 84 116
Total liabilities 84 116
Level 2    
Assets:    
Cash equivalents - Money market mutual funds 0 0
Equity securities, at fair value 0 0
Marketable Securities 0 0
Trading securities held in a "rabbi trust" 0 0
Total assets 0 0
Liabilities:    
Deferred compensation accrual "rabbi trust" 0 0
Total liabilities 0 0
Level 3    
Assets:    
Cash equivalents - Money market mutual funds 0 0
Equity securities, at fair value 0 0
Marketable Securities 0 0
Trading securities held in a "rabbi trust" 0 0
Total assets 0 0
Liabilities:    
Deferred compensation accrual "rabbi trust" 0 0
Total liabilities $ 0 $ 0
[1] Trading securities held in a rabbi trust are included in Prepaids and other current assets and Other long-term assets, net in the consolidated balance sheets.
[2] Non-qualified deferred compensation in a rabbi trust is included in Accrued liabilities and Other long-term liabilities in the consolidated balance sheets.