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Condensed Consolidated Balance Sheets (Parentheticals) - USD ($)
shares in Thousands, $ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Noncurrent Assets:    
Allowance for obsolescence $ 40 $ 120
Accumulated depreciation, rental equipment 182,560 177,729
Accumulated depreciation, property and equipment 17,554 16,981
Accumulated amortization, operating lease right of use assets 760 721
Accumulated amortization, intangibles $ 2,290 $ 2,259
Stockholders’ Equity:    
Preferred stock, shares authorized (in shares) 5,000 5,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, shares authorized (in shares) 30,000 30,000
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares issued (in shares) 13,548 13,519
Treasury shares (in shares) 1,310 1,310