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

The Company and Basis of Presentation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	9 Months Ended
	Nov. 12, 2021	Sep. 30, 2021	Sep. 30, 2020	Oct. 22, 2021	Feb. 28, 2021	Dec. 31, 2020	Jul. 15, 2020
Subsidiary, Sale of Stock [Line Items]
Warrants Outstanding (in shares)		7,676,112				5,996,112
Proceeds from sales of common stock, net of issuance costs		$ 32,610	$ 1,341
Warrants
Subsidiary, Sale of Stock [Line Items]
Warrants Outstanding (in shares)					3,840,000		2,160,000
Warrants \| Common Stock
Subsidiary, Sale of Stock [Line Items]
Exercise price per share (in dollars per share)					$ 2.25		$ 4.00
At Market Issuance Sales Agreement
Subsidiary, Sale of Stock [Line Items]
Proceeds from sales of common stock, net of issuance costs		$ 3,052
Subsequent Event
Subsidiary, Sale of Stock [Line Items]
Proceeds from sales of common stock, net of issuance costs	$ 66,696
Subsequent Event \| Warrants
Subsidiary, Sale of Stock [Line Items]
Proceeds from sales of common stock, net of issuance costs	4,635
Subsequent Event \| Warrants \| Common Stock
Subsidiary, Sale of Stock [Line Items]
Exercise price per share (in dollars per share)				$ 2.25
Subsequent Event \| At Market Issuance Sales Agreement
Subsidiary, Sale of Stock [Line Items]
Proceeds from sales of common stock, net of issuance costs	$ 62,061