Net Income (Loss) per Share - Schedule of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator
Net loss before allocation to noncontrolling interest		$ (8,068)	$ (65,169)	$ (45,971)	$ (77,255)
Net loss attributable to AST LLC pre-Business Combination			0		(11,580)
Net loss attributable to noncontrolling interest		(5,144)	(45,191)	(32,326)	(45,697)
Net loss attributable to common stockholders - basic and diluted		$ (2,924)	$ (19,978)	$ (13,645)	$ (19,978)
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted-average shares of Class A common stock outstanding - basic	[1]	51,868,658	51,729,704	51,814,888	51,729,704
Weighted-average shares of Class A common stock outstanding - diluted	[1]	51,868,658	51,729,704	51,814,888	51,729,704
Earnings per share of Class A common stock - Basic	[1]	$ (0.06)	$ (0.39)	$ (0.26)	$ (0.39)
Earnings per share of Class A common stock - Diluted	[1]	$ (0.06)	$ (0.39)	$ (0.26)	$ (0.39)
Common Class A [Member]
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted-average shares of Class A common stock outstanding - basic		51,868,658	51,729,704	51,814,888	51,729,704
Weighted-average shares of Class A common stock outstanding - diluted		51,868,658	51,729,704	51,814,888	51,729,704
Earnings per share of Class A common stock - Basic		$ (0.06)	$ (0.39)	$ (0.26)	$ (0.39)
Earnings per share of Class A common stock - Diluted		$ (0.06)	$ (0.39)	$ (0.26)	$ (0.39)

[1] (1) Earnings per share information excludes earnings for the periods prior to the Business Combination, as it resulted in values that would not be meaningful to the users of these condensed consolidated financial statements. Refer to Note 14 for further information.