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Property and Equipment (Tables)
 12 Months Ended
Dec. 31, 2015
Property Plant And Equipment [Abstract]  
Property and Equipment

Cost, accumulated depreciation, and the related estimated useful lives of property and equipment as of December 31, 2015 and 2014 are as follows:

 

 

 

2015

 

 

2014

 

 

Useful lives

Office furniture and equipment

 

$

911

 

 

$

917

 

 

3-7 years

Rental inventory

 

 

1,216

 

 

 

1,314

 

 

5 years

Vehicles

 

 

76

 

 

 

76

 

 

5 years

Leasehold improvements

 

 

104

 

 

 

104

 

 

2-6 years

Assembly equipment

 

 

125

 

 

 

125

 

 

7 years

 

 

 

2,432

 

 

 

2,536

 

 

 

Less accumulated depreciation

 

 

(1,631

)

 

 

(1,260

)

 

 

 

 

$

801

 

 

$

1,276