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Consolidated Statements of Changes in Shareholders’ Equity (Unaudited) (Parentheticals)	3 Months Ended
	Mar. 31, 2024
Statement of Stockholders' Equity [Abstract]
Stock for acquisition of ownership percentage	13.33%

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- Definition

Stock for acquisition of ownership percentage.

+ References

No definition available.

+ Details

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Namespace Prefix:	gdc_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration