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Property and Equipment
 12 Months Ended
Dec. 31, 2017
Property Plant And Equipment [Abstract]  
Property and Equipment

(4) Property and Equipment

Property and equipment consists of the following at December 31, 2017 and 2016 (in thousands):

 

 

 

Useful life

 

 

As of December 31,

 

 

 

in years

 

 

2017

 

 

2016

 

Furniture and equipment

 

 

5

 

 

$

1,854

 

 

$

928

 

System hardware

 

 

5

 

 

 

1,623

 

 

 

3,320

 

Office computers

 

 

3

 

 

 

2,586

 

 

 

1,777

 

Computer and system software

 

 

3

 

 

 

1,193

 

 

 

1,478

 

 

 

 

 

 

 

 

7,256

 

 

 

7,503

 

Less accumulated depreciation and amortization

 

 

 

 

 

 

(4,460

)

 

 

(4,580

)

Property and equipment, net

 

 

 

 

 

$

2,796

 

 

$

2,923

 

 

Depreciation and amortization expense for the years ended December 31, 2017, 2016 and 2015 was $1.9 million, $1.7 million and $1.4 million, respectively.