Supplemental Financial Information (Tables)

6 Months Ended

Jun. 30, 2020

Supplemental Financial Information [Abstract]

Summary of Allowance for Expected Credit Losses

Allowance for expected credit losses, included within Accounts receivable, is as follows:

Balance as of December 31, 2019	$	1,822
Bad debt recovery		(6	)
Amounts written off, net of recoveries		(930	)
Balance as of June 30, 2020	$	886

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following as of: 

	June 30, 2020		December 31, 2019
Maintenance	$	161,975	$	136,315
Deferred grant income		132,877		-
Customer maintenance reserves		96,131		110,355
Salaries, wages and benefits		88,180		75,719
Deferred revenue		38,437		26,357
Aircraft fuel		34,726		28,821
Other		100,927		104,158
Accrued liabilities	$	653,253	$	481,725

Summary of Significant Changes in Revenue Contract Liability Balances

Significant changes in our Revenue contract liability balances during the six months ended June 30, 2020 were as follows:

	Deferred Revenue
Balance as of December 31, 2019	$	19,234
Revenue recognized		(95,027	)
Amounts collected or invoiced		108,556
Balance as of June 30, 2020	$	32,763

Reconciliation of Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total shown in the consolidated statements of cash flows:

	June 30, 2020		December 31, 2019
Cash and cash equivalents	$	726,402	$	103,029
Restricted cash		12,776		10,401
Total Cash, cash equivalents and restricted cash shown in Consolidated Statements of Cash Flows	$	739,178	$	113,430