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Lease (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Lease, Cost [Table Text Block]

The components of lease costs recognized on the statements of income were as follows:

						Year Ended December 31,
(in thousands)			Classification on the Statements of Income			2020						2019
Finance lease costs:
Amortization of assets			Depreciation and amortization			$	6,631					$	6,517
Interest on lease liabilities			Interest expense			5,335						5,264
Operating lease cost			Aircraft lease rentals; Station operations; Maintenance and repairs; Other operating expense			12,616						3,541
Variable lease cost			Station operations; Maintenance and repairs; Other operating expense			3,560						2,274
Total lease cost						$	28,142					$	17,596

Leases of Lessee Disclosure [Text Block]

The table below presents the lease-related assets and liabilities recorded on the balance sheet.

						As of December 31,
(in thousands)			Classification on the Balance Sheet			2020						2019
Assets
Operating lease assets			Operating lease right-of-use assets, net			$	115,911					$	22,081
Finance lease assets			Property and equipment, net			133,175						111,665
Total lease assets						$	249,086					$	133,746
Liabilities
Current
Operating			Current operating lease liabilities			$	14,313					$	2,662
Finance			Current maturities of long-term debt and finance lease obligations			9,767						7,666
Noncurrent
Operating			Noncurrent operating lease liabilities			102,289						21,290
Finance			Long-term debt and finance lease obligations			117,060						107,930
Total lease liabilities						$	243,429					$	139,548
Weighted-average remaining lease term
Operating leases						8.3 years						9.1 years
Finance leases						7.6 years						9.9 years
Weighted-average discount rate
Operating leases						5.4		%				4.3		%
Finance leases						5.0		%				4.4		%

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

The table below presents supplemental cash flow information related to leases during the year ended December 31.

			Year Ended December 31,
(in thousands)			2020						2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases			$	13,102					$	2,927
Operating cash flows for finance leases			$	5,335					5,264
Financing cash flows for finance leases			15,908						7,336

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The table below indicates the future minimum payments of lease liabilities as of December 31, 2020.

(in thousands)			Operating Leases						Finance Leases
2021			$	20,055					$	15,871
2022			20,313						14,366
2023			20,160						26,045
2024			19,853						10,500
2025			17,723						10,500
Thereafter			44,486						82,458
Total lease payments			142,590						159,740
Less imputed interest			(25,988)						(32,913)
Total lease obligations			116,602						126,827
Less current obligations			(14,313)						(9,767)
Long-term lease obligations			$	102,289					$	117,060

X

- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

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X

- Definition

The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-URI http://asc.fasb.org/topic&trid=2208923

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Tabular disclosure of supplemental cash flow information for the periods presented.

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- Definition

Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121573735&loc=d3e41502-112717

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