Liability of the Fair Value of Warrants to be issued

No definition available.

Name:	atsg_Warrantliability
Namespace Prefix:	atsg_
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Balance Type:	credit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

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+ Details

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

- Definition

Number of warrants or rights outstanding.

+ References

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-Topic 235
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-Section S99
-Paragraph 1
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+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Balance Type:	na
Period Type:	duration

- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

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+ Details

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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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- Details

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- Details

Name:	srt_MajorCustomersAxis=atsg_DoDMember
Namespace Prefix:
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- Details

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- Details

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Significant Customers (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Concentration Risk [Line Items]
Accounts receivable	$ 149,804		$ 149,804		$ 162,870
Fair Value Adjustment of Warrants	(55,900)	$ 93,400	(48,300)	$ 72,700
Warrant liability	$ 210,319		$ 210,319		383,073
DHL [Member] \| Revenues from Leases and Contracted Services [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues	13.00%	13.00%	12.00%	14.00%
DHL [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 11,000		$ 11,000		12,700
Amazon [Member] \| Revenues from Leases and Contracted Services [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues	29.00%	26.00%	29.00%	21.00%
Amazon [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 42,500		$ 42,500		50,100
US Military [Member] \| Revenues from Leases and Contracted Services [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues	33.00%	34.00%	33.00%	36.00%
US Military [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 49,200		$ 49,200		44,500
Amazon Warrant AB [Member]
Concentration Risk [Line Items]
Class of Warrant or Right, Outstanding	14,900		14,900
Amazon Warrant C [Member] [Member]
Concentration Risk [Line Items]
Class of Warrant or Right, Outstanding	13,900		13,900
Warrant liability	$ (210,300)		$ (210,300)		$ (383,100)