Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Taxes

Income tax expense (benefit)

	Year ended December 31,
	2019		2018
Deferred:
Federal	$	(276)	$	(3,586)
State		(867)		138
Deferred income tax benefit		(1,143)		(3,448)
Current:
Federal		—		—
State		18		1
Foreign		232		—
Total income tax benefit, net	$	(893)	$	(3,447)

Tax Rate Reconciliation

	Year ended December 31,
	2019			2018
Income tax benefit at U.S. federal statutory rate		21.0	%		21.0	%
State income tax benefit, net of federal benefit		3.9	%		—	%
Other permanent differences		(14.9)	%		(0.4)	%
Goodwill impairment		—	%		(7.6)	%
Research and development credit		(0.2)	%		0.9	%
Change in state tax rate		—	%		(1.1)	%
Foreign rate differential		(0.1)	%		—	%
Other adjustments		0.3	%		—	%
Change in valuation allowance		(8.8)	%		(3.9)	%
Effective income tax rate		1.2	%		8.9	%

Deferred Tax Assets

	December 31,
	2019		2018
Deferred tax assets:
Start-up costs	$	1,208	$	1,239
Capitalized research and development costs		612		728
Reserves and accruals		8,180		7,465
Property and equipment		55		—
Research and development credit		1,194		1,334
Lease liability		118		—
State and local taxes		4		—
Net operating loss carryforwards		27,860		22,721
Total gross deferred tax assets		39,231		33,487
Valuation allowance		(36,349)		(29,904)
Deferred tax assets, net of valuation allowance		2,882		3,583
Intangible assets		(3,396)		(5,385)
Operating lease right-of-use assets		(188)		—
Property and equipment		—		(42)
Total gross deferred tax liabilities		(3,584)		(5,427)
Net deferred tax liability	$	(702)	$	(1,844)