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Basis of Presentation - Acquisition - Additional Information (Details) |  | 9 Months Ended |
--- | --- | --- | ---
Jun. 12, 2020 | Sep. 30, 2020 | Jul. 21, 2020
LWI |  |  |
Variable Interest Entity |  |  |
Ownership percentage | 51.00% | 51.00% |
WeGoLook, LC |  |  |
Variable Interest Entity |  |  |
Membership interest percentage |  |  | 15.00%

X
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121559654&loc=SL6759159-111685 + Details
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- Details
Name: | srt_OwnershipAxis=crda_LloydWarwickInternationalMember
Namespace Prefix: |
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- Details
Name: | srt_OwnershipAxis=crda_WeGoLookLCMember
Namespace Prefix: |
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Balance Type: |
Period Type: |