Balance Sheet Components

6 Months Ended

Jun. 30, 2019

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Components

4. Balance Sheet Components

Property and Equipment, net

Property and equipment, net, consists of the following:

	June 30,			December 31,
	2019			2018
	(in thousands)
Computer hardware and software	$	2,427		$	2,148
Furniture and equipment		1,774			1,002
Leasehold improvements		7,298			4,709
		11,499			7,859
Less: Accumulated depreciation		(3,136	)		(2,216	)
	$	8,363		$	5,643

Depreciation expense for the three months ended June 30, 2019 and 2018 was $0.5 million and $0.2 million, respectively. Depreciation expense for the six months ended June 30, 2019 and 2018 was $0.9 million and $0.5 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:

	June 30,		December 31,
	2019		2018
	(in thousands)
Development costs	$	28,498	$	21,216
Employee-related expenses		15,585		19,638
Professional services		14,299		10,903
Other accrued expenses		530		237
	$	58,912	$	51,994