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Significant Accounting Policies (Details Textual) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Sep. 30, 2014
Software development costs
Sep. 30, 2014
Inventory Valuation and Obsolescence
Sep. 30, 2014
Inventory Valuation and Obsolescence
Oct. 31, 2014
Subsequent Event
Significant Accounting Policies [Abstract]                    
Equity and Noncontrolling interest 20.00%     20.00%            
Allowance for uncollectible accounts receivable $ 936     $ 936   $ 1,837        
Deferred revenue 109     109   0       0
Writeoff of noncore inventory       2,005            
Inventory finished goods 2,506     2,506            
Inventory parts 247     247            
Inventory supplies 390     390            
Reserve for obsolete and damaged inventory 660     660   1,278        
Increase in reserve for obsolete and damaged inventory       The Company now estimates that finished units held for sale will be reserved beginning in year three and fully reserved after four years compared to five years previously.            
Increase in reserve for obsolete and damaged inventory 414     414            
Cost of revenue - sales 1,211   1,289 2,976 4,664     168 414  
Increase in cost of revenue per share               $ 0.01 $ 0.02  
Open purchase commitments 107     107            
Estimated useful lives             5 years      
Write-off rental units   $ 650   $ 650