SELECTED BALANCE SHEET COMPONENTS (Tables)

9 Months Ended

Sep. 30, 2017

Balance Sheet Related Disclosures [Abstract]

Schedule of inventory

Inventory as of September 30, 2017 and December 31, 2016:

(In thousands)	September 30, 2017		December 31, 2016
Raw materials	$	3,727	$	3,214
Work-in-process	279		257
Finished goods	43		17
Inventory	$	4,049	$	3,488

Schedule of property and equipment, net

Property and equipment, net as of September 30, 2017 and December 31, 2016: 

(In thousands)	September 30, 2017			December 31, 2016
Machinery and equipment	$	3,264		$	3,150
Furniture, fixtures and office equipment	981			931
Computer equipment and software	3,485			3,147
Leasehold improvements	3,908			3,332
Construction in process	608			408
Total property and equipment, gross	12,246			10,968
Less: Accumulated depreciation	(8,279		)	(7,093		)
	$	3,967		$	3,875

Schedule of accounts payable and accrued expenses

Accrued expenses as of September 30, 2017 and December 31, 2016:

(In thousands)	September 30, 2017		December 31, 2016
Bonus related compensation	$	1,608	$	2,433
Employee related accruals	2,021		1,668
Clinical trial related accruals	379		422
Other	506		—
	$	4,514	$	4,523