Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Loss Before Income Taxes

Loss before income taxes includes the following components:

	Year ended December 31,
	2019			2018			2017
	(in thousands)
United States	$	(30,970	)	$	(20,644	)	$	(23,372	)
Foreign	(20,088		)	(10,291		)	(8,870		)
Loss before income taxes	$	(51,058	)	$	(30,935	)	$	(32,242	)

Schedule of Income Tax Expense

The expense for income taxes consists of the following:

	Year ended December 31,
	2019		2018		2017
	(in thousands)
Current tax provision (benefit):
Federal	$	—	$	—	$	—
State	106		81		68
Foreign	386		104		140
Deferred tax provision (benefit):
Federal	—		—		—
State	—		—		—
Foreign	—		—		—
Total tax expense	$	492	$	185	$	208

Schedule of Effective Tax Rate Reconciliation

Reconciliation between our effective tax rate on income from continuing operations and the U.S. federal statutory rate is as follows:

	Year ended December 31,
	2019		2018		2017
Provision at federal statutory tax rate	21	%	21	%	34	%
State taxes, net of federal tax impact	—	%	—	%	(3	)%
Change in valuation allowance	(12	)%	(11	)%	13	%
Foreign tax rate differential	(8	)%	(7	)%	(10	)%
Federal statutory tax rate change	—	%	—	%	(32	)%
Other	(2	)%	(4	)%	(3	)%
Net deferred tax (liabilities) assets	(1	)%	(1	)%	(1	)%

Schedule of Deferred Tax Assets and Liabilities

Our deferred tax assets and liabilities were as follows:

	Year ended December 31,
	2019			2018
	(in thousands)
Reserves and accruals	$	1,839		$	1,892
Stock-based compensation	1,116			686
Net operating losses	30,750			25,558
Other	1,753			1,780
Amortization	642			344
Deferred tax assets	36,100			30,260
Depreciation	(285		)	(212		)
State tax	(2,034		)	(1,706		)
Deferred tax liabilities	(2,319		)	(1,918		)
Valuation allowance	(33,781		)	(28,342		)
Net deferred tax (liabilities) assets	$	—		$	—