Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets - Additional Information (Details)

v2.4.0.8
Intangible Assets - Additional Information (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 1 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Patient setup video, Website development, redesign and commercials
Mar. 31, 2014
Comfort Life Medical, LLC
Dec. 31, 2008
Comfort Life Medical, LLC
Dec. 31, 2011
Air Products & Chemicals
Dec. 31, 2009
Air Products & Chemicals
Patents
Mar. 31, 2014
Air Products & Chemicals
Dec. 31, 2011
Breathe Oxygen Services, LLC.
Finite Lived Intangible Assets [Line Items]                  
Acquisition of intangible asset         $ 92   $ 250   $ 66
Estimated useful life of intangible asset 2 years     10 years       5 years 10 years
Number of patents             4    
Increase in long term liability             250    
Purchased additional patents           650      
Cost incurred for advertising     169            
Amortization of intangible assets $ 39 $ 68