v3.20.1

DEFERRED DEVELOPMENT WRITE OFF (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 28, 2020 | Dec. 28, 2019 | Jan. 15, 2019 | Jul. 31, 2015
DEFERRED DEVELOPMENT WRITE OFF |  |  |  |
Escrow Deposit |  | $ 2,049,000 | $ 200,000 | $ 2,500,000
Write-off of deferred development costs | $ 111,000 | $ 325,000 |  |

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- References No definition available. + Details
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Namespace Prefix: | cuo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Write-off of amounts previously capitalized as development cost. + References No definition available. + Details
Name: | cuo_WriteOffOfDeferredDevelopmentCosts
Namespace Prefix: | cuo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant