LEASES (Summary of Lease-related Assets and Liabilities) (Details) $ in Thousands	May 31, 2019 USD ($)
Schedule Of Lease Assets And Liabilities [Abstract]
Operating lease right-of-use assets	$ 29,267
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	camp:OperatingLeaseRightOfUseAssetsMember
Operating lease liabilities (current)	$ 5,933
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:OtherCurrentLiabilitiesMember
Operating lease liabilities	$ 26,808
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	camp:OperatingLeaseLiabilitiesMember
Total lease liabilities	$ 32,741