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Reverse Recapitalization - Schedule of outstanding common stock (Details) - shares		3 Months Ended
	Mar. 26, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Reverse Recapitalization
Common stock, shares outstanding		47,611,000		24,166,000
Common stock issued		1,421,715	678,462
Total common stock issued and outstanding	45,833,000	47,611,000		24,166,000
Sponsor Earnout Shares
Reverse Recapitalization
Sponsor earnout common stock outstanding prior to the Business Combination	8,625,000
PIPE financing
Reverse Recapitalization
Common stock issued	4,530,000
Concord III
Reverse Recapitalization
Common stock, shares outstanding	3,941,000
Less: redemption of Concord I I I's common stock	(3,766,000)
Common stock of Concord I I I issued and outstanding	8,800,000
Legacy G C T
Reverse Recapitalization
Legacy GCT common stock	32,503,000

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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