Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Dec. 31, 2016

Debt Instrument [Line Items]

Schedule of Long-term Debt Instruments

Long-term debt consisted of the following as of December 31, 2017 and 2016 (dollars in thousands):

	2017			2016
Credit Agreement with variable interest rates (weighted average of 2.82% and 2.71% before impact of interest rate swaps at December 31, 2017 and 2016, respectively) due 2020	$	1,567,882		$	1,630,406
Australian Credit Agreement with variable interest rates (weighted average of 4.28% and 4.64% before impact of interest rate swaps at December 31, 2017 and 2016, respectively) due 2021	525,101			498,801
Partner Loan Agreement (6.50% and 6.51% interest rate at December 31, 2017 and 2016, respectively) due 2026	186,085			172,154
Other debt and capital leases	77,402			91,278
Less: Unamortized debt issuance costs long-term	(25,175		)	(33,186		)
Long-term debt	2,331,295			2,359,453
Less: current portion, net of unamortized debt issuance costs	27,853			52,538
Long-term debt, less current portion	$	2,303,442		$	2,306,915

Schedule of Debt

he British pound-denominated term loans began to amortize in quarterly installments during the three months ended September 30, 2016, with the remaining principal balance payable upon maturity, as set forth below (amounts in thousands):

	Quarterly Payment Date	Principal Amount Due on Each Payment Date
British pound:	March 31, 2018 through June 30, 2018	£	1,271
	September 30, 2018 through December 31, 2019	£	2,542
	Maturity date - March 31, 2020	£	75,532

Schedule of Unused Borrowing Capacity Under Revolving Credit Facility

The Company's availability to draw from the unused borrowing capacity is subject to covenant limitations as discussed below. As of December 31, 2017, the Company had the following unused borrowing capacity under its revolving credit facility (amounts in thousands):

	2017
Total available borrowing capacity	$	625,000
Outstanding revolving loans	$	228,640
Outstanding letter of credit guarantees	$	3,240
Unused borrowing capacity	$	393,120

Schedule of Maturities of Long-term Debt

The following is a summary of the maturities of the Company's long-term debt, including capital leases, as of December 31, 2017 (dollars in thousands):

	Amount
2018	$	36,866
2019	39,849
2020	1,586,249
2021	471,666
2022	12,380
Thereafter(a)	246,112
Total	$	2,393,122

(a) Includes the A$50.0 million (or $39.1 million at the exchange rate on December 31, 2017) non-interest bearing loan due in 2054 assumed in the FreightLink Acquisition with a carrying value of A$3.1 million (or $2.4 million at the exchange rate on December 31, 2017).

Schedule of Future Interest Expense Related to Amortization of Unamortized Debt Issuance Costs

As of December 31, 2017, the Company estimated the future interest expense related to amortization of its unamortized debt issuance costs will be as follows for the periods presented (dollars in thousands):

	Amount
2018	$	9,042
2019	8,959
2020	4,385
2021	2,789
2022	—
Total	$	25,175

Credit Agreement [Member]

Debt Instrument [Line Items]

Schedule of Debt

As of December 31, 2017, the Company had the following outstanding term loans under its Credit Agreement (amounts in thousands, except percentages):

	Local Currency		United States Dollar Equivalent		Interest Rate
United States dollar	$	1,213,000	$	1,213,000	3.07	%
British pound	£	93,326	$	126,242	1.99	%

Line of Credit [Member]

Debt Instrument [Line Items]

Schedule of Debt

As of December 31, 2017, the Company had the following outstanding revolving loans under its revolving credit facility (amounts in thousands, except percentages):

	Local Currency		United States Dollar Equivalent		Interest Rate
British pound	£	144,000	$	194,789	1.99	%
Canadian dollar	C$	4,000	$	3,195	2.91	%
Euro	€	25,500	$	30,656	1.50	%

Australia Credit Agreement

Debt Instrument [Line Items]

Schedule of Debt

The loan began to amortize in quarterly installments commencing during the three months ended March 31, 2017, with the remaining principal balance payable upon maturity, as set forth below (amounts in thousands):

Quarterly Periods Ending	Principal Amount Due on Each Payment Date
March 31, 2018 through December 31, 2019	A$	5,437
March 31, 2020 through December 31, 2021	A$	8,563
Maturity date - December 1, 2021	A$	560,000

The maximum leverage ratio of net senior debt to EBITDA, as defined in the agreement, is set forth in the following table:

Calculation date falling in the following period	Leverage Ratio
December 31, 2018	4.75 to 1.00
January 1, 2019 through December 31, 2020	4.50 to 1.00
January 1, 2021 through December 31, 2021	4.25 to 1.00

Schedule of Unused Borrowing Capacity Under Revolving Credit Facility

GWIA's availability to draw from the unused borrowing capacity is subject to covenant limitations as discussed below. As of December 31, 2017, GWIA had the following unused borrowing capacity under its revolving credit facility (amounts in thousands):

	2017
Total available borrowing capacity	A$	50,000
Outstanding letter of credit guarantees	A$	3,137
Unused borrowing capacity	A$	46,863

Maximum Total Leverage Ratio [Member]

Debt Instrument [Line Items]

Schedule of Debt

The maximum senior secured leverage ratio for the applicable periods is set forth in the following table:

Quarterly Periods Ending	Maximum Senior Secured Leverage Ratio
December 31, 2016 through September 30, 2017	4.50 to 1.00
December 31, 2017 through March 31, 2018	3.75 to 1.00
June 30, 2018 through March 31, 2020	3.50 to 1.00