Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 592,520	$ 373,056
Short-term investments	168,410	245,599
Accounts receivable, net	28,467	97,380
Income taxes receivable	92,365	64,192
Spare parts and supplies, net	35,660	37,630
Prepaid expenses and other	45,431	56,849
Total	962,853	874,706
Property and equipment, less accumulated depreciation and amortization of $823,757 and $762,544 as of June 30, 2020 and December 31, 2019, respectively	2,267,826	2,316,772
Other Assets:
Operating lease right-of-use assets	592,933	632,545
Long-term prepayments and other	159,383	182,438
Intangible assets, net	13,500	13,500
Goodwill	0	106,663
Total Assets	3,996,495	4,126,624
Current Liabilities:
Accounts payable	101,641	148,748
Air traffic liability and current frequent flyer deferred revenue	553,554	606,684
Other accrued liabilities	221,881	161,430
Current maturities of long-term debt, less discount	60,079	53,273
Current maturities of finance lease obligations	21,667	21,857
Current maturities of operating leases	78,655	83,224
Total	1,037,477	1,075,216
Long-Term Debt	792,766	547,254
Other Liabilities and Deferred Credits:
Noncurrent finance lease obligations	131,631	141,861
Noncurrent operating leases	476,401	514,685
Accumulated pension and other post-retirement benefit obligations	200,411	203,596
Other liabilities and deferred credits	80,350	97,434
Noncurrent frequent flyer deferred revenue	179,740	175,218
Deferred tax liability, net	271,786	289,564
Total	1,340,319	1,422,358
Commitments and Contingencies
Shareholders’ Equity:
Special preferred stock, $0.01 par value per share, three shares issued and outstanding as of June 30, 2020 and December 31, 2019	0	0
Common stock, $0.01 par value per share, 45,996,537 and 46,121,859 shares outstanding as of June 30, 2020 and December 31, 2019, respectively	460	461
Capital in excess of par value	143,374	135,651
Accumulated income	785,269	1,049,567
Accumulated other comprehensive loss, net	(103,170)	(103,883)
Total	825,933	1,081,796
Total Liabilities and Shareholders’ Equity	$ 3,996,495	$ 4,126,624
Special preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Special preferred stock, shares issued (in shares)	3	3
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01