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Consolidated Balance Sheets (Parentheticals) - USD ($)
$ / shares in Thousands
Dec. 31, 2024
Dec. 31, 2023
Allowance for doubtful accounts $ 265,000 $ 100,000
Asser retirement obligations, non-related party $ 250,000 $ 250,000
Common stock, no par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized (in shares) 10,000,000 10,000,000
Common stock, shares issued (in shares) 6,420,000 6,300,000
Common stock, shares outstanding (in shares) 6,420,000 6,300,000