Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Additional Information (Details)

v3.2.0.727
Intangible Assets - Additional Information (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2009
USD ($)
Patents
Dec. 31, 2008
USD ($)
Finite Lived Intangible Assets [Line Items]                
Estimated useful life of intangible asset     2 years          
Purchased additional patents     $ 11 $ 180        
Amortization of intangible assets $ 22 $ 41 43 80        
Production of commercials                
Finite Lived Intangible Assets [Line Items]                
Cost incurred for advertising     $ 11          
Patient setup video, Website development, redesign and commercials                
Finite Lived Intangible Assets [Line Items]                
Cost incurred for advertising   11   180        
Air Products & Chemicals                
Finite Lived Intangible Assets [Line Items]                
Acquisition of intangible asset             $ 250  
Estimated useful life of intangible asset     5 years          
Impairments 0 0 $ 0 0        
Number of patents | Patents             4  
Increase in long term liability     $ 250          
Purchased additional patents           $ 650    
Comfort Life Medical, LLC                
Finite Lived Intangible Assets [Line Items]                
Acquisition of intangible asset               $ 92
Estimated useful life of intangible asset     10 years          
Impairments     $ 0   $ 0      
Breathe Oxygen Services, LLC                
Finite Lived Intangible Assets [Line Items]                
Acquisition of intangible asset           $ 66    
Estimated useful life of intangible asset           10 years    
Impairments $ 0 $ 0 $ 0 $ 0