CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Previously Reported	Revision of Prior Period, Adjustment	Adjustment	Common Stock	Common Stock Previously Reported	Common Stock Revision of Prior Period, Adjustment	Additional Paid-in Capital	Additional Paid-in Capital Previously Reported	Additional Paid-in Capital Revision of Prior Period, Adjustment	Accumulated Deficit	Accumulated Deficit Previously Reported	Accumulated Deficit Adjustment
Beginning Balance (in shares) at Dec. 31, 2021					65,772,001	45,176,145	20,595,856
Beginning Balance at Dec. 31, 2021	$ 13,858	$ 13,858	$ 0	$ (154)	$ 7	$ 1	$ 6	$ 89,252	$ 89,258	$ (6)	$ (75,401)	$ (75,401)	$ (154)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)					4,549
Exercise of stock options	8							8
Capital contributions from Amprius Holdings	247							247
Stock-based compensation	456							456
Net loss	(2,878)										(2,878)
Ending Balance (in shares) at Mar. 31, 2022					65,776,550
Ending Balance at Mar. 31, 2022	11,537				$ 7			89,963			(78,433)
Beginning Balance (in shares) at Dec. 31, 2021					65,772,001	45,176,145	20,595,856
Beginning Balance at Dec. 31, 2021	13,858	$ 13,858	$ 0	$ (154)	$ 7	$ 1	$ 6	89,252	$ 89,258	$ (6)	(75,401)	$ (75,401)	$ (154)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(7,032)
Ending Balance (in shares) at Jun. 30, 2022					65,776,550
Ending Balance at Jun. 30, 2022	8,531				$ 7			91,111			(82,587)
Beginning Balance (in shares) at Mar. 31, 2022					65,776,550
Beginning Balance at Mar. 31, 2022	11,537				$ 7			89,963			(78,433)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital contributions from Amprius Holdings	258							258
Stock-based compensation	890							890
Net loss	(4,154)										(4,154)
Ending Balance (in shares) at Jun. 30, 2022					65,776,550
Ending Balance at Jun. 30, 2022	$ 8,531				$ 7			91,111			(82,587)
Beginning Balance (in shares) at Dec. 31, 2022	84,610,114				84,610,114
Beginning Balance at Dec. 31, 2022	$ 73,033				$ 8			165,912			(92,887)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with a stock purchase agreement, net of issuance cost (in shares)					331,351
Issuance of common stock in connection with a stock purchase agreement, net of issuance cost	2,376							2,376
Exercise of stock options (in shares)					30,000
Exercise of stock options	2							2
Stock-based compensation	726							726
Net loss	(9,102)										(9,102)
Ending Balance (in shares) at Mar. 31, 2023					84,971,465
Ending Balance at Mar. 31, 2023	$ 67,035				$ 8			169,016			(101,989)
Beginning Balance (in shares) at Dec. 31, 2022	84,610,114				84,610,114
Beginning Balance at Dec. 31, 2022	$ 73,033				$ 8			165,912			(92,887)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (18,550)
Ending Balance (in shares) at Jun. 30, 2023	84,610,114				85,993,560
Ending Balance at Jun. 30, 2023	$ 66,690				$ 9			178,118			(111,437)
Beginning Balance (in shares) at Mar. 31, 2023					84,971,465
Beginning Balance at Mar. 31, 2023	67,035				$ 8			169,016			(101,989)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with a stock purchase agreement, net of issuance cost (in shares)					875,772
Issuance of common stock in connection with a stock purchase agreement, net of issuance cost	8,177				$ 1			8,176
Exercise of stock options (in shares)					146,223
Exercise of stock options	1							1
Exercise of stock warrants (in shares)					100
Exercise of stock warrants	1							1
Stock-based compensation	924							924
Net loss	$ (9,448)										(9,448)
Ending Balance (in shares) at Jun. 30, 2023	84,610,114				85,993,560
Ending Balance at Jun. 30, 2023	$ 66,690				$ 9			$ 178,118			$ (111,437)