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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Cash flows from operating activities:    
Net cash provided by operating activities $ 666 $ 163
Cash flows from investing activities:    
Change in inventory used for rental 10 40
Net cash provided by investing activities 10 40
Cash flows from financing activities:    
Net borrowings (repayments) on line of credit (640) 96
Payments on capital leases and other obligations (20) (14)
Net cash (used in) provided by financing activities (660) 82
Net increase in cash 16 285
Cash at the beginning of the period 8 63
Cash at the end of the period 24 348
Supplemental cash flow information:    
Interest paid 94 132
Income taxes paid (including interest and penalties) $ 0 $ 0