Debt Instrument, Covenant Description, Mandatory Prepayment, Net Proceeds From Disposition of Assets, Percent

No definition available.

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- Definition

Debt Instrument, Covenant Description, Mandatory Prepayment, Net Proceeds From Issuance of Debt or Equity Securities, Percent

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Covenant Description, Mandatory Prepayment, Outstanding Balance to Liquidation Value, Percent

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Covenant Description, Pledge of Outstanding Capital Stock, Percent

+ References

No definition available.

+ Details

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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

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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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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LONG-TERM DEBT (Additional Information) (Details) - USD ($)	Mar. 13, 2014	Mar. 11, 2014
Subordinated Debt [Member]
Debt Instrument [Line Items]
Covenant description, mandatory prepayment, net proceeds from disposition of assets	100.00%
Covenant description, mandatory prepayment, net proceeds from issuance of debt or equity securities	100.00%
Lower Lakes Towing Ltd. [Member] \| Second Lien Canadian Term Loan [Member] \| LIBOR [Member] \| Subordinated Debt [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	9.50%
Lower Lakes Towing Ltd. [Member] \| Second Lien Canadian Term Loan [Member] \| US Base Rate [Member] \| Subordinated Debt [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	8.50%
Lower Lakes Towing Ltd. [Member] \| Loans Payable [Member] \| Canadian Term Loan [Member] \| Canadian Prime Rate [Member] \| Fourth Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Lower Lakes Towing Ltd. [Member] \| Loans Payable [Member] \| Canadian Term Loan [Member] \| Canadian BA Rate [Member] \| Fourth Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	4.00%
Grand River Navigation Company, Inc. [Member] \| Loans Payable [Member] \| US Term Loan [Member] \| Fourth Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Covenant description, pledge of outstanding capital stock	65.00%
Covenant description, mandatory prepayment, outstanding balance to liquidation value	85.00%
Covenant description, mandatory prepayment, net proceeds from disposition of assets	100.00%
Covenant description, mandatory prepayment, net proceeds from issuance of debt or equity securities	100.00%
Grand River Navigation Company, Inc. [Member] \| Loans Payable [Member] \| US Term Loan [Member] \| LIBOR [Member] \| Fourth Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	4.00%
Grand River Navigation Company, Inc. [Member] \| Loans Payable [Member] \| US Term Loan [Member] \| US Base Rate [Member] \| Fourth Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
United States of America, Dollars \| LIBOR [Member] \| Fourth Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	4.00%
United States of America, Dollars \| US Base Rate [Member] \| Fourth Amended and Restated Credit Agreement [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
United States of America, Dollars \| Lower Lakes Towing Ltd. [Member] \| Second Lien Canadian Term Loan [Member] \| Subordinated Debt [Member]
Debt Instrument [Line Items]
Face amount		$ 34,200,000
United States of America, Dollars \| Grand River Navigation Company, Inc. [Member] \| US Term Loan [Member] \| Fourth Amended and Restated Credit Agreement [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Face amount		$ 55,246,000