Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Income (Loss) Before Provision for Income Taxes

For the years ended December 31, 2019, 2018 and 2017, the income (loss) before provision for income taxes consist of the following (in thousands):

	Years Ended December 31,
	2019		2018			2017
Domestic	$	9,155	$	5,966		$	5,184
Foreign		58,151		(170,394	)		(71,792	)
Total	$	67,306	$	(164,428	)	$	(66,608	)

Schedule of (Provision for) Benefit from Income Taxes

The (provision for) benefit from income taxes consist of the following (in thousands):

	Years Ended December 31,
	2019			2018			2017
Current income taxes:
Federal	$	(423	)	$	(416	)	$	(1,533	)
State		(59	)		(131	)		(42	)
Foreign		—			0			6
Total current income taxes		(482	)		(547	)		(1,569	)
Deferred income taxes:
Federal		34			(6	)		(477	)
State		—			—			297
Foreign		—			—			—
Total deferred income taxes		34			(6	)		(180	)
Total income tax provision	$	(448	)	$	(553	)	$	(1,749	)

Schedule of Reconciliation of Income Tax Expense Computed at Statutory Corporate Income Tax Rate to Effective Income Tax Rate

A reconciliation of income tax expense computed at the statutory corporate income tax rate to the effective income tax rate for the years ended December 31, 2019, 2018 and 2017 is as follows:

	Years Ended December 31,
	2019			2018			2017
Income tax expense at statutory rate		9.3	%		9.3	%		9.3	%
State income tax, net of federal benefit		(2.1	)%		0.7	%		0.3	%
Nondeductible expenses		(0.1	)%		0.0	%		0.0	%
Foreign rate differential		2.0	%		(0.4	%)		(2.5	%)
Statutory to US GAAP permanent differences		0.1	%		1.0	%		1.8	%
Stock-based compensation		(2.0	%)		1.4	%		(2.9	%)
Impact of deferred rate change		(12.2	%)		0.0	%		0.0	%
Research credits		(5.2	)%		1.8	%		0.8	%
Change in valuation allowance		10.9	%		(14.1	%)		(9.4	%)
Effective income tax rate		0.7	%		(0.3	%)		(2.6	%)

Schedule of Significant Components of Company's Deferred Tax Assets

Deferred taxes are recognized for temporary differences between the basis of assets and liabilities for financial statement and income tax purposes. The significant components of the Company’s deferred tax assets are comprised of the following (in thousands):

	Years Ended December 31,
	2019			2018
Deferred tax assets:
Net operating loss carryforwards	$	31,496		$	25,418
Accruals and reserves		2,868			1,816
Operating lease liabilities		14,214			—
Deferred Rent		—			3,300
Other deferred tax assets		28			51
Stock-based compensation		5,217			2,871
Deferred revenue		(20	)		3,264
Research credit		7,150			3,322
Total deferred tax assets		60,953			40,042
Less valuation allowance		(45,913	)		(36,208	)
Net deferred tax assets		15,040			3,834
Deferred tax liabilities:
Depreciation		(3,901	)		(3,785	)
Operating lease assets		(11,068	)		—
Intangible assets		(40	)		(49	)
Other deferred tax liabilities		(20	)		(22	)
Total deferred tax liabilities		(15,029	)		(3,856	)
Long term deferred taxes	$	11		$	(22	)

Schedule of Aggregate Changes in Gross Unrecognized Tax Benefits

The aggregate changes in gross unrecognized tax benefits was as follows (in thousands):

	Years Ended December 31,
	2019		2018		2017
Balance at beginning of year	$	1,595	$	354	$	163
Increases for tax positions taken during current period		2,754		1,212		178
Increases for tax positions taken in prior periods		882		29		13
Decreases for tax positions taken during current period		—		—		—
Decreases for tax positions taken in prior periods		—		—		—
Balance at end of year	$	5,231	$	1,595	$	354