XML 19 R28.htm IDEA: XBRL DOCUMENT v2.4.0.6
Property and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Property Plant And Equipment [Line Items]    
Property and Equipment, Gross $ 5,354 $ 5,602
Less accumulated depreciation (1,835) (1,751)
Property and Equipment, Net 3,519 3,851
Office furniture and equipment
   
Property Plant And Equipment [Line Items]    
Property and Equipment, Gross 1,960 1,836
Office furniture and equipment | Minimum
   
Property Plant And Equipment [Line Items]    
Property and Equipment Useful Life 3 years  
Office furniture and equipment | Maximum
   
Property Plant And Equipment [Line Items]    
Property and Equipment Useful Life 7 years  
Rental inventory
   
Property Plant And Equipment [Line Items]    
Property and Equipment, Gross 2,772 3,147
Property and Equipment Useful Life 5 years  
Vehicles
   
Property Plant And Equipment [Line Items]    
Property and Equipment, Gross 76 76
Property and Equipment Useful Life 5 years  
Leasehold improvements
   
Property Plant And Equipment [Line Items]    
Property and Equipment, Gross 375 375
Leasehold improvements | Minimum
   
Property Plant And Equipment [Line Items]    
Property and Equipment Useful Life 2 years  
Leasehold improvements | Maximum
   
Property Plant And Equipment [Line Items]    
Property and Equipment Useful Life 6 years  
Assembly equipment
   
Property Plant And Equipment [Line Items]    
Property and Equipment, Gross $ 171 $ 168
Property and Equipment Useful Life 7 years