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SUPPLEMENTARY CASH FLOW INFORMATION (Details 1) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Interest paid $ 92,000 $ 264,000 $ 618,000
Taxes paid 589,000 279,000 2,373,000
Equipment acquired under finance leases and equipment loans $ 1,058,000 $ 0 $ 122,000