Fair value warrants issued per share basis

No definition available.

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- Definition

Liability of the Fair Value of Warrants to be issued

+ References

No definition available.

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- 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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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

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- Definition

The number of warrants or rights which entitle the entity to receive future services in exchange for the unvested, forfeitable warrants or rights.

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- 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.

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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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- Definition

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

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Significant Customers (Details) - USD ($)	3 Months Ended								12 Months Ended
Significant Customers (Details) - USD ($)	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Accounts receivable	$ 153,511,000				$ 162,870,000				$ 153,511,000	$ 162,870,000
Fair Value Adjustment of Warrants	(44,700,000)	$ (53,400,000)	$ (109,700,000)	$ 107,000,000.0	(72,900,000)	$ 92,000,000.0	$ (35,900,000)	$ 4,500,000	(95,500,000)	(2,300,000)	$ 7,400,000
Warrant liability	103,474,000				383,073,000				$ 103,474,000	$ 383,073,000
DHL [Member] \| Revenues from Leases and Contracted Services [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues									12.00%	14.00%	26.00%
DHL [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	10,471,000				12,688,000				$ 10,471,000	$ 12,688,000
Amazon [Member] \| Revenues from Leases and Contracted Services [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues									30.00%	23.00%	27.00%
Amazon [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	55,997,000				50,036,000				$ 55,997,000	$ 50,036,000
US Military [Member] \| Revenues from Leases and Contracted Services [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues									31.00%	34.00%	15.00%
US Military [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 32,625,000				44,513,000				$ 32,625,000	$ 44,513,000
Amazon Warrant AB [Member]
Concentration Risk [Line Items]
Fair value warrants issued					13.93					13.93
Class of Warrant or Right, Outstanding	14,900,000								14,900,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 9.73								$ 9.73
Class of Warrant or Right, Unissued	0.0								0.0
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	39,600,000								39,600,000
Amazon Warrant C [Member] [Member]
Concentration Risk [Line Items]
Fair value warrants issued	$ 15.49				9.30				$ 15.49	9.30
Class of Warrant or Right, Outstanding	14,800,000								14,800,000
Warrant liability	$ (103,500,000)				$ (383,100,000)				$ (103,500,000)	$ (383,100,000)
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 21.53								$ 21.53
Class of Warrant or Right, Unissued	0.0								0.0
Amazon Warrant Subsequent [Member]
Concentration Risk [Line Items]
Class of Warrant or Right, Outstanding	600,000								600,000
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 20.40								$ 20.40
Class of Warrant or Right, Unissued	6,400,000								6,400,000