Balance Sheet Components

3 Months Ended

Mar. 31, 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:

	March 31,			December 31,
	2019			2018
	(in thousands)
Computer hardware and software	$	2,286		$	2,148
Furniture and equipment		1,125			1,002
Leasehold improvements		5,733			4,709
		9,144			7,859
Less: Accumulated depreciation		(2,631	)		(2,216	)
	$	6,513		$	5,643

Depreciation expense for the three months ended March 31, 2019 and 2018 was $0.4 million and $0.2 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:

			December 31,
	March 31, 2019		2018
	(in thousands)
Development costs	$	23,932	$	21,216
Employee-related expenses		8,676		19,638
Professional services		11,746		10,903
Other accrued expenses		3,297		237
	$	47,651	$	51,994