v3.20.1

REVOLVING BANK LOAN AND LONG-TERM DEBT (Details) | 3 Months Ended |
--- | --- | ---
Jun. 30, 2020 USD ($) | Mar. 31, 2020 USD ($) | Mar. 28, 2020 USD ($) | Mar. 30, 2019 USD ($) | Dec. 28, 2019 USD ($)
Minimum | Period Ending June 28, 2014 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Fixed charge coverage ratio |  |  | 1.06 |  |
Revolving Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum revolving credit facility line |  |  | $ 20,000,000 |  |
Borrowings as a percentage of eligible accounts receivable |  |  | 85.00% |  |
Borrowings as a percentage of eligible inventories |  |  | 60.00% |  |
Maximum inventory borrowings |  |  | $ 8,500,000 |  |
Minimum EBITDA threshold amount |  | $ (525,000) |  |  |
Minimum EBITDA threshold amount in next three months | $ 265,000 |  |  |  |
Threshold average daily excess availability |  |  | 5,000,000 |  |
Outstanding amount |  |  | 0 |  | $ 800,000
Highest balance outstanding during the period |  |  | 2,950,000 | $ 2,200,000 |
Average outstanding |  |  | 1,134,000 | $ 802,000 |
Outstanding amount of letters of credit total |  |  | $ 5,620,000 |  |
Revolving Credit Facility [Member] | LIBOR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Percentage points added to the reference rate |  |  | 2.00% |  |

X
- Definition Represents the ratio of the sum for such period of adjusted EBITDA, plus the aggregate fixed charge cure amount, if any, minus the sum of income taxes paid in cash and all unfinanced capital expenditures to the sum of interest expense and scheduled principal payments of the term debt under the terms of the credit agreement's covenants. + References No definition available. + Details
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- Definition The threshold amount of minimum EBITDA under the debt instrument agreement. + References No definition available. + Details
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Namespace Prefix: | cuo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The threshold amount of minimum EBITDA in the next three months under the debt instrument agreement. + References No definition available. + Details
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Namespace Prefix: | cuo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of threshold average daily excess availability in order to not be tested for fixed charge coverage ratio. + References No definition available. + Details
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Namespace Prefix: | cuo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents borrowings under the credit facility as a percentage of eligible accounts receivable used as collateral to secure the financing. + References No definition available. + Details
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Period Type: | instant

X
- Definition Represents borrowings under the credit facility as a percentage of eligible inventories used as collateral to secure the financing. + References No definition available. + Details
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Namespace Prefix: | cuo_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + 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 The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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Balance Type: | credit
Period Type: | instant

X
- Definition Average amount borrowed under the credit facility during the period. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

X
- Definition The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for financing purchases of goods acquired for inventory or imminent delivery to a customer. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Maximum amount borrowed under the credit facility at any time during the period. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Balance Type: | credit
Period Type: | instant

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- Details
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- Details
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- Details
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- Details
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