Percentage points added to the reference rate to compute the variable rate on the finance lease liability.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Date the finance lease liability terminates, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
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- Definition

Amount of payment greater than the preceding installment payments to be paid at final maturity date of finance lease liability.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Number of repayment installments of an agreement.

+ References

No definition available.

+ Details

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- Definition

The number and type of vessels financed.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Balance Type:	credit
Period Type:	instant

- 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.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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- Definition

The date of the transaction involving the sale of the property to another party and the lease of the property back to the seller.

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- Definition

Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in financing activities.

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- Definition

The amount of the quarterly rental payments due under the lease entered into in connection with the transactions involving the sale of property to another party and the lease of the property back to the seller.

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Borrowings - Sale and Leaseback Agreements (Details) $ in Thousands	4 Months Ended	6 Months Ended
	Apr. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)
Debt Instrument [Line Items]
Outstanding Amount		$ 1,198,030	$ 1,216,400
CMB Financial Leasing Co.
Debt Instrument [Line Items]
Sale Leaseback Transaction, Date		Mar. 31, 2018
Finance Lease Liability		$ 65,542		$ 71,500
Sale Leaseback Transaction, Net Proceeds, Financing Activities	$ 71,500
Vessels financed		Four product tankers
Repayment installments		24
Sale Leaseback Transaction, Quarterly Rental Payments		$ 1,490
Finance Lease Liability Periodic Payment Terms, Balloon Payment to be Paid		$ 35,750
Finance Lease Liability, Maturity Date		Apr. 30, 2024
Interest rate description		LIBOR plus 305 bps
Finance Lease Basis Spread On Variable Rate		3.05%
Outstanding Amount		$ 65,542	68,521
AVIC International leasing Co, Ltd
Debt Instrument [Line Items]
Finance Lease Liability		$ 103,155
Vessels financed		Three product tankers and two product tankers previously financed by Eurobank Ergasia S.A.
Repayment installments		28
Sale Leaseback Transaction, Quarterly Rental Payments		$ 2,267
Finance Lease Liability Periodic Payment Terms, Balloon Payment to be Paid		$ 39,675
Finance Lease Liability, Maturity Date		Apr. 30, 2026
Interest rate description		LIBOR plus 350 bps
Finance Lease Basis Spread On Variable Rate		3.50%
Outstanding Amount		$ 102,257	$ 0