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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Cash flows from operating activities:    
Net cash provided by (used in) operating activities $ 769 $ (194)
Cash flows from investing activities:    
Change in inventory used for rental 6 73
Net cash (used in) provided by investing activities 6 73
Cash flows from financing activities:    
Net (repayments) borrowings on line of credit (718) 178
Payments on capital leases and other obligations (36) (33)
Net cash (used in) provided by financing activities (754) 145
Net increase in cash 21 24
Cash at the beginning of the period 8 63
Cash at the end of the period 29 87
Supplemental cash flow information:    
Interest paid 172 258
Income taxes paid (including interest and penalties) $ 0 $ 0