Income Taxes - Schedule of Significant Components of Company's Deferred Tax Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred tax assets:
Net operating loss carryforwards	$ 3,934	$ 2,600
Accruals and reserves	791	189
Deferred Rent	5,228
Other deferred tax assets	7	72
Deferred revenue	2,525	406
Research credit	425	104
Total deferred tax assets	12,910	3,371
Less valuation allowance	(6,770)	(2,892)
Net deferred tax assets	6,140	479
Deferred tax liabilities:
Depreciation	(5,909)	(321)
Intangible assets	(68)	(80)
Other deferred tax liabilities		(53)
Total deferred tax liabilities	(5,977)	(454)
Long term deferred taxes	$ 163	$ 25