NET LOSS PER COMMON SHARE (Details) - $ / shares	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025
NET LOSS PER COMMON SHARE
Assumed price	$ 38	$ 38
Assumed price after discount	$ 19	$ 19
Discount rate	50.00%	50.00%

The assumed price per share after discount of the conversion feature embedded in the debt instrument.

No definition available.

Name:	cgct_DebtInstrumentConvertibleAssumedConversionPriceAfterDiscount
Namespace Prefix:	cgct_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration