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Selected Balance Sheet Components
 12 Months Ended
Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]  
Selected Balance Sheet Components Selected Balance Sheet Components
 
Inventory

Inventory as of December 31, 2019 and 2018:
 
(In thousands)
 
2019
 
2018
Raw materials
 
$
6,085

 
$
2,872

Work-in-process
 
541

 
638

Finished goods
 
190

 
48

Inventory
 
$
6,816

 
$
3,558


 
Property and Equipment

Property and Equipment, net as of December 31, 2019 and 2018:
 
(In thousands)
 
2019
 
2018
Machinery and equipment
 
$
3,152

 
$
1,536

Furniture, fixtures and office equipment
 
775

 
775

Computer equipment and software
 
6,174

 
3,712

Leasehold improvements
 
5,256

 
4,587

Construction in process
 
859

 
2,801

Financing right-of-use lease
 
148

 
—

Total property and equipment, gross
 
16,364

 
13,411

Less accumulated depreciation
 
(9,220
)
 
(7,505
)
 
 
$
7,144

 
$
5,906


 
Depreciation expense for the years ended December 31, 2019, 2018 and 2017 were $1.7 million, $1.4 million and $1.6 million, respectively.
 
Accrued Expenses

Accrued Expenses as of December 31, 2019 and 2018:
 
(In thousands)
 
 
2019
 
2018
Bonus related compensation
 
 
$
5,116

 
$
5,161

Employee related accruals
 
 
1,785

 
1,559

Other accrued expenses
 
 
1,047

 
210

Accrued expenses
 
 
$
7,948

 
$
6,930