Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2018

Fair value assets and liabilities measured on recurring basis

The following tables set forth our financial assets as of June 30, 2018 and December 31, 2017 that we measured at fair value on a recurring basis by level within the fair value hierarchy. Assets measured at fair value are classified in their entirety based on the lowest level of input that is significant to their fair value measurement.



			Fair Value Measurements at June 30, 2018 Using Fair Value Hierarchy
	Fair Value as of June 30, 2018		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Valuation Technique
Assets:
Cash and cash equivalents	$	142,360	$	142,360	$	—	$	—	Market
Restricted cash and cash equivalents	20,880		20,880		—		—		Market
Derivative assets	7,329		—		7,329		—		Market
Total	$	170,569	$	163,240	$	7,329	$	—



			Fair Value Measurements at December 31, 2017 Using Fair Value Hierarchy
	Fair Value as of December 31, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Valuation Technique
Assets:
Cash and cash equivalents	$	211,922	$	211,922	$	—	$	—	Market
Restricted cash and cash equivalents	21,935		21,935		—		—		Market
Derivative assets	3,254		—		3,254		—		Market
Total	$	237,111	$	233,857	$	3,254	$	—

Carrying amounts and fair values of financial instruments

The carrying amounts and fair values of our financial instruments at June 30, 2018 and December 31, 2017 were as follows:



	June 30, 2018				December 31, 2017
	Carrying Amount of Liability		Fair Value of Liability		Carrying Amount of Liability		Fair Value of Liability
Credit Facilities	$	100,000	$	100,000	$	175,000	$	175,000
Unsecured Term Loan	120,000		120,000		120,000		120,000
ECA Financings	208,448		208,823		227,491		232,030
Bank Financings	600,883		602,468		634,898		634,132
Senior Notes	3,200,000		3,246,700		3,200,000		3,367,245