Consolidated Balance Sheet Details (Tables)

12 Months Ended

Dec. 31, 2017

Balance Sheet Related Disclosures [Abstract]

Inventory

Inventory consists of the following:

	December 31,
	2017		2016
Raw materials	$	—	$	4,397
Work in process	—		2,650
	$	—	$	7,047

Property and Equipment, Net

Depreciation is calculated on a straight-line basis over the estimated useful lives of the respective assets and primarily consists of the following:

Computer equipment and software	3 years
Furniture and fixtures	3-7 years
Leasehold improvements	Shorter of estimated useful life or lease term

Property and Equipment, Net (in thousands)

	December 31,
	2017			2016
Machinery, equipment and tooling	$	—		$	11,011
Construction in progress	—			104
Computer equipment and software	141			78
Leasehold improvements	976			1,372
Furniture and fixtures	407			659
Total	1,524			13,224
Less accumulated depreciation	(1,279		)	(11,514		)
Property and equipment, net	$	245		$	1,710

Other Assets

Other Assets (in thousands)

	December 31,
	2017		2016
Deposits and other	278		376
Prepaid clinical trial costs	3,653		771
	$	3,931	$	1,147

Accrued Expenses

Accrued Expenses (in thousands)

	December 31,
	2017		2016
Accrued product returns	$	—	$	99
Accrued interest payable, current	—		121
Accrued clinical trial costs	8,657		3,657
Other accrued expenses	1,842		2,497
	$	10,499	$	6,374

Other Long-Term Liabilities

Other Long-Term Liabilities (in thousands)

	December 31,
	2017		2016
Deferred rent	$	244	$	661
Accrual for end of term fee related to term loan	—		729
Other long-term liabilities	540		—
	$	784	$	1,390