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ACCOUNTING POLICIES (Details 1) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Cash equivalents    
Cash equivalents $ 3,000 $ 3,135
Assets:    
Cash equivalents - Money market mutual funds 2,975 3,135
Equity securities, at fair value 2,018 2,636
Trading securities held in a "rabbi trust" 95 [1] 84
Total assets 5,088 5,855
Liabilities:    
Deferred compensation accrual "rabbi trust" 96 [2] 85
Total liabilities 96 85
Level 1    
Assets:    
Cash equivalents - Money market mutual funds 2,975 3,135
Equity securities, at fair value 2,018 2,636
Trading securities held in a "rabbi trust" 95 [1] 84
Total assets 5,088 5,855
Liabilities:    
Deferred compensation accrual "rabbi trust" 96 [2] 85
Total liabilities 96 85
Level 2    
Assets:    
Cash equivalents - Money market mutual funds 0 0
Equity securities, at fair value 0 0
Trading securities held in a "rabbi trust" 0 [1] 0
Total assets 0 0
Liabilities:    
Deferred compensation accrual "rabbi trust" 0 [2] 0
Total liabilities 0 0
Level 3    
Assets:    
Cash equivalents - Money market mutual funds 0 0
Equity securities, at fair value 0 0
Trading securities held in a "rabbi trust" 0 [1] 0
Total assets 0 0
Liabilities:    
Deferred compensation accrual "rabbi trust" 0 [2] 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.