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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Current Assets:    
Allowance for doubtful accounts $ 1,126 $ 692
Stockholders' Equity:    
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 20,000,000 40,000,000
Common stock, shares issued (in shares) 11,479,000 11,962,000
Common stock, shares outstanding (in shares) 11,479,000 11,962,000