Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Taxes

Schedule of the difference between income tax expense and the amount computed by applying the statutory federal income tax rate to income before income tax

A reconciliation between the statutory rate U.S. federal rate and the Company’s effective tax rate is as follows (in thousands):

	Year Ended December 31,
	2019		2018
Federal income taxat statutory rate	$	(6,233)	$	(4,642)
State income tax, net of federal benefit		(1,293)		(1,300)
Foreign taxdifferential		2,346		733
Permanent differences		394		178
Taxcredits generated in current year		(732)		(783)
Other		840		1
Valuation allowance change		4,678		5,813
	$	—	$	—

Significant components of deferred tax assets

Significant components of our deferred tax assets (in thousands) are as follows:

	Year Ended December 31,
	2019		2018
Net operating loss carryforwards	$	14,519	$	10,228
Accruals and reserves		1,292		1,053
Research and development credits		1,534		1,368
Deferred revenue		—		6
Depreciation and amortization		(34)		(23)
Total		17,311		12,632
Valuation allowance		(17,311)		(12,632)
Net deferred taxassets	$	—	$	—

Schedule of reconciliation of the beginning and ending amount of the Company's liability for uncertain tax positions

A reconciliation of the beginning and ending amount of the Company’s liability for uncertain tax positions (in thousands) is as follows:

	Years Ended December 31,
	2019		2018
Balance at the beginning of the year	$	486	$	213
Increase based on current year tax positions		254		271
Increase (decrease) for prior year tax positions		(206)		2
Balance at the end of the year	$	534	$	486