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11. Fair Value Measurements
3 Months Ended
Mar. 31, 2018
Fair Value Measurements  
Fair Value Measurements

We have financial instruments as of March 31, 2018 and December 31, 2017 for which the fair value is summarized below (in thousands):

 

    March 31, 2018     December 31, 2017    
    Carrying Value     Estimated Fair Value     Carrying Value     Estimated Fair Value  
Assets:                        
Trade receivables, net   $ 392     $ 392     $ 403     $ 403  
Equipment financing receivables     147       147       174       174  
Liabilities:                                
Notes payable     39       39       79       79