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BALANCE SHEET COMPONENTS
 12 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
BALANCE SHEET COMPONENTS
BALANCE SHEET COMPONENTS
 
December 31,
2017
 
January 1,
2017
 
(in thousands)
Inventories:
 
 
 
Work-in-process
$
2,894

 
1,538

Finished goods
665

 
479

 
$
3,559

 
$
2,017

Other current assets:
 
 
 
Prepaid expenses
$
836

 
$
960

Other
161

 
163

 
$
997

 
$
1,123

Property and equipment:
 
 
 
Equipment
$
10,996

 
$
11,524

Software
3,139

 
2,624

Furniture and fixtures
46

 
41

Leasehold improvements
674

 
708

 
14,855

 
14,897

Accumulated depreciation and amortization
(12,480
)
 
(12,132
)
 
$
2,375

 
$
2,765

Accrued liabilities:
 
 
 
Employee compensation related accruals
$
1,143

 
$
1,222

Other
510

 
358

 
$
1,653

 
$
1,580



The Company recorded depreciation and amortization expense of $1.4 million, $1.3 million and $1.4 million for 2017, 2016 and 2015, respectively. Assets acquired under capital leases and included in property and equipment were $1.3 million and $772,000 at the end of 2017 and 2016, respectively. The Company recorded accumulated depreciation on leased assets of $607,000 and $515,000 as of the end of 2017 and 2016, respectively. As of December 31, 2017 and January 1, 2017, the capital lease obligation relating to these assets was $654,000 and $209,000 respectively.