Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Reconciliation of Differences between United States Statutory Federal Income Tax Rate and Effective Tax Rate

A reconciliation of the differences between the United States statutory federal income tax rate and the effective tax rate as provided in the statement of operations is as follows:

	Year ended December 31,
	2018			2017
Tax computed at the federal statutory rate		21.0	%		34.0	%
State income taxes, net of federal benefits		2.7			5.8
Tax reform—tax rate change		—			(18.6	)
Nondeductible expenses		(2.0	)		—
Other		(2.2	)		—
Change in valuation allowance		(19.5	)		(21.2	)
		—			—

Summary of Federal and State Income Tax Provision

The federal and state income tax provision is summarized as follows (in thousands):

	Year ended December 31,
	2018		2017
Current
Federal	$	—	$	—
State		10		1
		10		1
Deferred
Federal		—		—
State		—		—
		—		—
Income tax expense	$	10	$	1

Significant Components of Deferred Tax Assets (Liabilities)

The tax effects of significant components of the Company’s deferred tax assets (liabilities) are as follows (in thousands):

	December 31,
	2018			2017
Deferred Tax Assets:
Net operating loss carryforwards	$	6,990		$	1,994
Other accruals		88			79
Reserves		203			142
Deferred revenue		661			697
Intangible assets		353			618
Stock-based compensation		6,464			4,314
	$	14,759		$	7,844
Deferred Tax Liabilities:
Property and equipment		(888	)		(5	)
Valuation allowance	$	(13,871	)	$	(7,839	)
Total deferred taxes	$	—		$	—