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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Current Assets:    
Allowance for doubtful accounts $ 1,129 $ 1,161
Noncurrent Assets:    
Allowance for inventory obsolescence 64 221
Accumulated depreciation, rental equipment 172,563 175,802
Accumulated depreciation, property and equipment 15,784 13,916
Accumulated amortization, operating lease right of use assets 555 356
Accumulated amortization, intangibles $ 2,134 $ 2,008
Stockholders’ Equity:    
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, shares authorized (in shares) 30,000,000 30,000,000
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares issued (in shares) 13,394,000 13,296,000
Common stock, shares outstanding (in shares) 13,394,000 13,296,000
Treasury shares (in shares) 775,000 38,000