Supplemental Financial Information

6 Months Ended

Jun. 30, 2022

Supplemental Financial Information [Abstract]

5. Supplemental Financial Information

Accounts Receivable

Accounts receivable, net of allowance for expected credit losses related to customer contracts, excluding Dry Leasing contracts, was $221.1 million as of June 30, 2022 and $248.4 million as of December 31, 2021.

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


Balance as of December 31, 2021	$	4,003
Reversal of expected credit losses		(6	)
Amounts written off and other items		(68	)
Balance as of June 30, 2022	$	3,929

Accrued Liabilities

Accrued liabilities consisted of the following as of:


	June 30, 2022		December 31, 2021
Salaries, wages and benefits	$	172,854	$	211,801
Maintenance		127,881		135,133
Customer maintenance reserves		96,307		87,565
Aircraft fuel		73,846		40,855
Deferred revenue		66,864		58,616
Other		116,746		108,008
Accrued liabilities	$	654,498	$	641,978

Revenue Contract Liability

Deferred revenue for customer contracts, excluding Dry Leasing contracts, represents amounts collected from, or invoiced to, customers in advance of revenue recognition. The balance of Deferred revenue will increase or decrease based on the timing of invoices and recognition of revenue.

Significant changes in Deferred Revenue liability balances during the six months ended June 30, 2022 were as follows:


Balance as of December 31, 2021	$	52,647
Revenue recognized		(224,199	)
Amounts collected or invoiced		227,535
Balance as of June 30, 2022	$	55,983

Supplemental Cash Flow Information

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, 2022		December 31, 2021
Cash and cash equivalents	$	606,567	$	910,965
Restricted cash		10,361		10,052
Total Cash, cash equivalents and restricted cash shown in Consolidated Statements of Cash Flows	$	616,928	$	921,017