Accrued Expenses, Accrued Income Taxes and Other Current Liabilities - Additional Information (Details) $ in Thousands	3 Months Ended
Mar. 31, 2023 USD ($)
Payables and Accruals [Abstract]
Decrease in accrued bonus	$ 5,271
Increase in accured income taxes	14,414
Decrease in other accrued expenses and other current liabilities	$ 3,326

Decrease in other accrued expenses and other current liabilities

No definition available.

Name:	carg_DecreaseInOtherAccruedExpensesAndOtherCurrentLiabilities
Namespace Prefix:	carg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration