XML 47 R35.htm IDEA: XBRL DOCUMENT v3.20.2

Basis of Presentation - Canada Emergency Wage Subsidy Program of 2020 - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020
Canada Emergency Wage Subsidy Program of 2020
Recognition of reduction in compensation expense	$ 4,345,000	$ 4,345,000

X

- Definition

Recognition of reduction in compensation expense

+ References

No definition available.

+ Details

Name:	crda_RecognitionOfReductionInCompensationExpense
Namespace Prefix:	crda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_UnusualRiskOrUncertaintyByNatureAxis=crda_CanadaEmergencyWageSubsidyProgramOf2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: