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PROPERTY AND EQUIPMENT
 12 Months Ended
Dec. 31, 2017
PROPERTY AND EQUIPMENT  
PROPERTY AND EQUIPMENT

4. PROPERTY AND EQUIPMENT

 

Property and equipment, net consisted of the following:

 

 

 

 

 

 

 

 

 

 

    

2017

    

2016

 

Computer software and hardware

 

$

241

 

$

606

 

Research and lab equipment

 

 

508

 

 

1,895

 

Leasehold improvements

 

 

431

 

 

431

 

Office equipment

 

 

796

 

 

796

 

Less accumulated depreciation and amortization

 

 

(1,819)

 

 

(3,218)

 

Property and equipment, net

 

$

157

 

$

510

 

 

Depreciation expense for the years ended December 31, 2017,  2016, and 2015 was $377,  $536, and $672, respectively. Maintenance and repairs are charged to expense as incurred and any additions or improvements are capitalized. On August 28, 2017, the Company implemented a strategic restructuring and as a result wrote off $1,807 of fully depreciated assets and also recorded an impairment loss of $41 related to certain fixed assets in connection with the restructuring. The Company had no disposals for the years ended 2016.