Veritone, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

Commitments and Contingencies - Additional Information (Detail) $ / shares in Units, $ in Thousands		1 Months Ended		3 Months Ended			9 Months Ended
	Jul. 24, 2017 USD ($) ft² Options	Sep. 30, 2017 USD ($)	Mar. 31, 2017 USD ($) $ / shares	Sep. 30, 2017 USD ($) shares	Jun. 30, 2017 USD ($) shares	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) shares	Sep. 30, 2016 USD ($)	May 17, 2017 $ / shares
Building Lease Agreement [Member]
Other Commitments [Line Items]
Lease provided area of office space (in square feet) \| ft²	37,875
Office building lease agreement, initial term	82 months
Office building lease agreement, renewal terms	5 years
Number of lease renewal options (in leases) \| Options	2
Total minimum lease payments	$ 9,317	$ 10,590		$ 10,590			$ 10,590
Rent expense				182		$ 155	$ 641	$ 439
Initial Public Offering [Member]
Other Commitments [Line Items]
Common stock price per share \| $ / shares									$ 15.00
Chad Steelberg and Ryan Steelberg [Member]
Other Commitments [Line Items]
Estimated common stock calculated value			$ 125
Chad Steelberg and Ryan Steelberg [Member] \| Time-based Stock Option [Member]
Other Commitments [Line Items]
Percentage of fully diluted shares outstanding that may be purchased			5.00%
Vesting period			3 years		3 years
Options Granted \| shares					2,089,638		2,089,638
Chad Steelberg and Ryan Steelberg [Member] \| Performance- based Stock Option [Member]
Other Commitments [Line Items]
Percentage of fully diluted shares outstanding that may be purchased			2.50%
Vesting period			5 years		5 years
Vesting rights description					The performance-based stock option would vest upon the earlier of (a) the first date on which the market capitalization of the Company's common stock equals or exceeds $400,000 over five consecutive business days, or (b) five years after the IPO		The performance-based stock option would vest upon the earlier of (a) the first date on which the market capitalization of the Company's common stock equals or exceeds $400,000 over five consecutive business days, or (b) five years after the IPO.
Vesting rights, market capitalization		$ 400,000	$ 400,000	$ 400,000	$ 400,000		$ 400,000
Vesting rights, consecutive trading days		5 days	5 days		5 days
Options Granted \| shares					1,044,818		1,044,818
Chad Steelberg and Ryan Steelberg [Member] \| Performance- based Stock Option [Member] \| Initial Public Offering [Member]
Other Commitments [Line Items]
Common stock price per share \| $ / shares			$ 15
Ryan Steelberg [Member]
Other Commitments [Line Items]
Annual salary under agreement			$ 350
Chief Executive Officer [Member]
Other Commitments [Line Items]
Share-based compensation arrangement by share-based payment award, shares issued in period \| shares				2,471	10,121