Debt instrument floor interest rate.

No definition available.

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- Definition

Debt instrument periodic payment end date.

+ References

No definition available.

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- Definition

Letters of credit aggregate amount.

+ References

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- Definition

Maximum guarantor voting stock percentage of foreign subsidiaries eligible for secured term loan.

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No definition available.

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- Definition

Carrying amount as of the balance sheet date of cash collateral held for borrowed securities, for which the cash is restricted as to withdrawal or usage.

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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.

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- Definition

Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

+ References

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- Definition

Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

+ References

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

+ Details

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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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

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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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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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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.

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Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

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- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Long-Term Debt - Additional Information (Detail)			3 Months Ended
Long-Term Debt - Additional Information (Detail)	Dec. 24, 2019 USD ($)	Jun. 01, 2018 USD ($)	Mar. 31, 2020 USD ($)	Jun. 29, 2020 USD ($)	Jun. 25, 2020 CAD ($)	Mar. 31, 2020 CAD ($)	Dec. 31, 2019 USD ($)
Promissory Note [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate description			Two of these unrelated parties had interest rates of 1.0% and 4.11%, respectively, at both March 31, 2020 and December 31, 2019. The third unrelated party was repaid with proceeds from the sale of the Winchester & Western Railroad from September 10, 2019 and did not require any interest payments.
Promissory Note [Member] \| Unrelated Party One [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			1.00%			1.00%	1.00%
Promissory Note [Member] \| Unrelated Party Two [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			4.11%			4.11%	4.11%
Bank Overdrafts [Member] \| Bank of Montreal [Member] \| Subsidiaries [Member] \| Canada [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity					$ 500,000	$ 2,000,000.0
Line of credit			$ 0				$ 0
Line of credit, interest rate			4.95%			4.95%	4.95%
Standby Letters of Credit [Member]
Debt Instrument [Line Items]
Letter of credit outstanding			$ 12,700,000				$ 13,200,000
Industrial Revenue Bond [Member]
Debt Instrument [Line Items]
Debt instrument face amount			$ 10,000,000.0
Debt instrument borrowings, maturity date			Sep. 01, 2027
Debt instrument, interest rate			4.50%			4.50%
Debt instrument, collateralized by letter of credit			$ 10,000,000.0
Merger Agreement [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity	$ 75,000,000
Line of credit							$ 0
Debt instrument term	3 years
Merger Agreement [Member] \| Barclays Bank PLC [Member] \| Revolver [Member]
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity		$ 200,000,000
Merger Agreement [Member] \| Senior Secured Term Loan and Industrial Revenue Bond [Member] \| Barclays Bank PLC [Member]
Debt Instrument [Line Items]
Debt instrument face amount				$ 1,650,000,000
Merger Agreement [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument borrowings, maturity date		Jun. 01, 2025
Debt instrument, frequency of periodic payment			quarterly
Debt instrument, quarterly principal payment		$ 4,100,000	$ 4,000,000.0
Debt instrument, periodic payment, start date		Sep. 30, 2018
Debt instrument, periodic payment, end date		Mar. 31, 2025
Debt instrument, description of variable rate basis			three-month LIBOR plus 325 to 400 basis points depending on Total Net Leverage (as hereinafter defined) with a LIBOR floor of 1.0% or the Base Rate (as hereinafter defined)
Maximum guarantor voting stock of foreign subsidiaries eligible for secured term loan		65.00%
Debt Instrument, Covenant Description			There are no financial covenants governing the Term Loan
Debt instrument, interest rate			5.90%			5.90%
Merger Agreement [Member] \| Term Loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Long term debt		$ 150,000,000.0
Merger Agreement [Member] \| Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument floor rate		1.00%
Merger Agreement [Member] \| Term Loan [Member] \| LIBOR [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate		3.25%
Merger Agreement [Member] \| Term Loan [Member] \| LIBOR [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Applicable margin on interest rate		4.00%
Merger Agreement [Member] \| Term Loan [Member] \| Barclays Bank PLC [Member]
Debt Instrument [Line Items]
Debt instrument face amount		$ 1,650,000,000
RFA [Member] \| Receivables Facility [Member] \| Covia Financing [Member]
Debt Instrument [Line Items]
Line of credit			$ 0
Expiration date			Mar. 31, 2023
RFA [Member] \| Receivables Facility [Member] \| Covia Financing [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Letter of credit aggregate amount			$ 75,000,000