Balance Sheet Components

9 Months Ended

Sep. 30, 2018

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Components

4. Balance Sheet Components

Property and Equipment, net

Property and equipment, net, consists of the following:

	September 30, 2018			December 31, 2017
	(in thousands)
Computer hardware and software	$	1,778		$	1,090
Furniture and equipment		938			1,029
Leasehold improvements		4,305			2,967
		7,021			5,086
Less: Accumulated depreciation		(1,853	)		(1,073	)
	$	5,168		$	4,013

Depreciation expense for the three months ended September 30, 2018 and 2017 was $0.3 million and $0.1 million, respectively.  Depreciation expense for the nine months ended September 30, 2018 and 2017 was $0.8 million and $0.4 million, respectively.

The useful life for computer hardware and software is three years, furniture and equipment is five years and leasehold improvements is the lesser of the useful life or the term of the respective lease.

Accrued Expenses

Accrued expenses consist of the following:

	September 30, 2018		December 31, 2017
	(in thousands)
Development costs	$	23,364	$	23,473
Employee-related expenses		13,001		15,838
Professional services		12,110		3,166
Other accrued expenses		172		124
	$	48,647	$	42,601