Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Fair value assets and liabilities measured on recurring basis

The following tables set forth our financial assets as of June 30, 2017 and December 31, 2016 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, 2017 Using Fair Value Hierarchy
	Fair Value as of June 30, 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	$	481,035	$	481,035	$	—	$	—	Market
Restricted cash and cash equivalents	49,613		49,613		—		—		Market
Derivative assets	3,023		—		3,023		—		Market
Total	$	533,671	$	530,648	$	3,023	$	—



			Fair Value Measurements at December 31, 2016 Using Fair Value Hierarchy
	Fair Value as of December 31, 2016		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	$	455,579	$	455,579	$	—	$	—	Market
Restricted cash and cash equivalents	53,238		53,238		—		—		Market
Derivative assets	5,735		—		5,735		—		Market
Total	$	514,552	$	508,817	$	5,735	$	—

Carrying amounts and fair values of financial instruments

The carrying amounts and fair values of our financial instruments at June 30, 2017 and December 31, 2016 are as follows:



	June 30, 2017				December 31, 2016
	Carrying Amount of Liability		Fair Value of Liability		Carrying Amount of Liability		Fair Value of Liability
Unsecured Term Loan	$	120,000	$	120,000	$	120,000	$	120,000
ECA Financings	284,163		293,308		305,276		316,285
Bank Financings	787,843		786,104		933,541		925,783
Senior Notes	3,200,000		3,427,940		3,200,000		3,387,125