Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Components of Loss before Income Taxes

The components of loss before income taxes are as follows:

	Year Ended December 31,
	2018			2017			2016
	(in thousands)
Domestic	$	(41,985	)	$	(16,642	)	$	(8,572	)
Foreign		(4,734	)		(2,945	)		(2,738	)
Total	$	(46,719	)	$	(19,587	)	$	(11,310	)

Reconciliation of Provision for Income Taxes at Statutory Rate and Provision (Benefit) for Income Taxes at Effective Tax Rate

For purposes of reconciling the Company’s provision for income taxes at the statutory rate and the Company’s provision (benefit) for income taxes at the effective tax rate, a notional 26% tax rate was applied as follows:

	Year Ended December 31,
	2018			2017			2016
	(in thousands)
Income tax at federal statutory rate	$	(9,811	)	$	(6,659	)	$	(3,846	)
Increase/(decrease) in tax resulting from:
State income tax expense, net of federal tax effect		(2,749	)		(421	)		(183	)
Nondeductible permanent items		(1,522	)		1,506			1,012
Foreign rate differential		552			599			662
Tax rate change		134			7,226			(13	)
Adjustment to deferred taxes		307			37			(132	)
Change in valuation allowance		15,805			(2,291	)		2,351
Uncertain tax positions		143			76			83
Nonqualified stock option and performance    award windfall upon exercise		(1,983	)		—			—
Other		(80	)		(26	)		42
Total	$	796		$	47		$	(24	)

Schedule of Provision for (Benefit from) Income Taxes

The provision for (benefit from) income taxes is as follows:

	Year Ended December 31,
	2018			2017			2016
	(in thousands)
Current:
Federal	$	—		$	(23	)	$	—
State		48			51			31
Foreign		753			31			109
		801			59			140
Deferred:
Federal		(11,425	)		3,307			(1,823	)
State		(3,250	)		(669	)		(396	)
Foreign		(1,135	)		(359	)		(296	)
		(15,810	)		2,279			(2,515	)
Change in valuation allowance		15,805			(2,291	)		2,351
Total	$	796		$	47		$	(24	)

Schedule of Net Deferred Tax Assets (Liabilities)

The net deferred tax assets (liabilities) at December 31, 2018 and 2017 are comprised of the following:

	As of December 31,
	2018			2017
	(in thousands)
Deferred tax assets
Deferred rent	$	278		$	133
AMT credit		11			9
Accrued expenses		2,057			1,474
Deferred revenue		549			292
Net operating loss carryforward		34,662			14,957
Other assets		2,343			1,643
Property and equipment		123			—
Intangible assets		836			—
Valuation allowance		(25,079	)		(10,911	)
Total net deferred tax assets		15,780			7,597
Deferred tax liabilities
Deferred commissions		(3,215	)		—
Intangible assets		(7,295	)		(2,210	)
Property and equipment		—			(190	)
Debt discount		(4,986	)		(5,679	)
Other		(1,233	)		—
Total deferred tax liabilities		(16,729	)		(8,079	)
Total non-current deferred income tax liabilities	$	(949	)	$	(482	)

Schedule of Changes in Unrecognized Tax Benefits

The following changes occurred in the amount of unrecognized tax benefits during the years ended December 31, 2018, 2017, and 2016:

	Year Ended December 31,
	2018			2017		2016
	(in thousands)
Beginning balance of unrecognized tax benefits	$	326		$	250	$	167
Additions for current year tax positions		142			65		75
Additions/reductions for prior year tax positions		(14	)		—		0
Ending balance (excluding interest and penalties)		454			315		242
Interest and penalties		15			11		8
Total	$	469		$	326	$	250