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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
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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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Number of warrants or rights outstanding.

+ References

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-Section S99
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 25
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6939902&loc=d3e20148-110875

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Significant Customers (Details) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Concentration Risk [Line Items]
Accounts receivable	$ 65,563,000		$ 65,563,000		$ 77,247,000
Fair value warrants issued	15.44		$ 15.44
Fair Value Adjustment of Warrants	$ (35,000,000)
Class of Warrant or Right, Outstanding	3,840		3,840
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	14,900	9,800	14,900	9,800
DHL [Member] \| Revenues from Leases and Contracted Services [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues	25.00%	34.00%	25.00%	35.00%
DHL [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 3,700,000		$ 3,700,000		7,300,000
Amazon [Member] \| Revenues from Leases and Contracted Services [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues	45.00%	31.00%	42.00%	24.00%
Amazon [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 25,900,000		$ 25,900,000		24,600,000
US Military [Member] \| Revenues from Services Performed [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenues	7.00%	12.00%	7.00%	13.00%
US Military [Member] \| Accounts Receivable [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 5,300,000		$ 5,300,000		$ 7,000,000