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Fair Value of Financial Instruments (Tables)
 6 Months Ended
Jun. 30, 2017
Fair Value Disclosures [Abstract]  
Fair Value, Assets and Liabilities Measured on Recurring Basis
The following table summarizes the financial instruments measured at fair value on a recurring basis classified in the fair value hierarchy (Level 1, 2 or 3) based on the inputs used for valuation in the accompanying unaudited condensed consolidated balance sheets:
 
As of June 30, 2017
 
As of December 31, 2016
Assets (liabilities) in thousands
Level 1
 
Level 2
 
Level 3
 
Total
 
Level 1
 
Level 2
 
Level 3
 
Total
Interest rate swaps
$
—

 
$
(6,525
)
 
$
—

 
$
(6,525
)
 
$
—

 
$
(2,305
)
 
$
—

 
$
(2,305
)
Foreign currency forward contracts
(18,073
)
 
—

 
—

 
(18,073
)
 
(13,299
)
 
—

 
—

 
(13,299
)
Cross currency swaps
—

 
34,646

 
—

 
34,646

 
—

 
41,752

 
—

 
41,752

Total
$
(18,073
)
 
$
28,121

 
$
—

 
$
10,048

 
$
(13,299
)
 
$
39,447

 
$
—

 
$
26,148
Schedule of Carrying Values and Estimated Fair Values of Debt
The following table presents the carrying amount and estimated fair value of the Company's outstanding short-term and long-term debt obligations as of June 30, 2017 and December 31, 2016, respectively:

As of June 30, 2017
 
As of December 31, 2016
(In thousands)
Carrying Amount
 
Fair Value
 
Carrying Amount
 
Fair Value
Long-term debt, including current portion
$
1,106,214

 
$
1,251,188

 
$
1,104,420

 
$
1,209,863