Debt, future undiscounted interest payments.

No definition available.

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- Definition

Debt Instrument Base Rate

+ References

No definition available.

+ Details

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- Definition

Deferred payment.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line Of Credit Facility Additional Borrowings

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility Extended Amount

+ References

No definition available.

+ Details

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- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

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Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments of both interest and principal.

+ References

+ Details

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Period Type:	duration

- Definition

For a debtor, the gain (loss) recognized on the transfer of assets, after the impact of income tax expense or benefit, arising from the difference between the book value of the assets transferred before the restructuring and the fair value of the assets transferred.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 60
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6402221&loc=d3e15743-112638

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Debt - Additional information (Detail) - USD ($)			1 Months Ended				12 Months Ended
Debt - Additional information (Detail) - USD ($)	Apr. 30, 2019	Dec. 24, 2018	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2004	Jun. 30, 2019	Jan. 25, 2018	Dec. 31, 2017	Jun. 05, 2017	Jul. 31, 2003
Letter of Credit [Member]
Deferred payment					$ 1,118,000	$ 3,918,000
Senior Aircraft Notes [Member]
Troubled debt restructuring and recorded a gain								$ 198,611,000
Senior Aircraft Notes [Member] \| First 15-months [Member]
Debt interest, base rate									1.50%
Senior Aircraft Notes [Member] \| Following 18-months [Member]
Debt interest, base rate									2.50%
Senior Aircraft Notes [Member] \| Thereafter [Member]
Debt interest, base rate									3.50%
Senior Aircraft Notes [Member] \| Minimum [Member]
Interest rate									4.75%
Senior Aircraft Notes [Member] \| Maximum [Member]
Interest rate									6.84%
Aircraft Notes [Member]
Interest rate		4.00%
Aggregate principal amount		$ 70,000,000					$ 70,000,000
Mandatory semi-annual amortization commencing on June 30, 2021		3,500,000
Future undiscounted interest payments		16,497,000					$ 16,497,000
Credit Agreements Due Through 2022 [Member]
Interest rate							5.00%	5.00%				5.00%
Line of credit										$ 26,987,000
Credit Agreements Due Through 2022 [Member] \| Second Credit Agreement [Member]
Line of credit											$ 15,198,000
Line of credit, additional borrowing amount										$ 6,034,000
Line of credit, payment extended	$ 7,273,000						$ 7,925,000
Line of credit, maturity date							Jun. 30, 2022
Credit Agreements Due Through 2022 [Member] \| Credit Agreement [Member]
Line of credit													$ 14,397,000
Line of credit, additional borrowing amount		$ 5,755,000
Line of credit, payment	$ 7,198,000
Line of credit, maturity date							Dec. 31, 2020
Credit Agreements Due Through 2022 [Member] \| Forecast [Member] \| Second Credit Agreement [Member]
Line of credit, payment			$ 3,963,000	$ 3,963,000
City of Milwaukee, Wisconsin variable rate Industrial Development Bonds [Member]
Aggregate principal amount														$ 4,275,000