WARRANTS	3 Months Ended
Mar. 31, 2018
Equity [Abstract]
Amazon Transaction Agreement	13. AMAZON TRANSACTION AGREEMENT On January 23, 2018, we entered into a Transaction Agreement (the “Amazon Transaction Agreement”) with Amazon.com, Inc. (“Amazon”), pursuant to which we agreed to issue to Amazon.com NV Investment Holdings LLC, a wholly owned subsidiary of Amazon (“NV Investment”), a warrant (the “Warrant”) to acquire up to 4,000,000 shares (the “Warrant Shares”) of our common stock, par value $0.01 per share (“Common Stock”), subject to certain vesting events. We entered into the Amazon Transaction Agreement in connection with existing commercial arrangements between us and Amazon pursuant to which we provide and will continue to provide commercial services to Amazon. The vesting of the Warrant shares, described below, is linked to payments made by Amazon or its affiliates (directly or indirectly through third parties) pursuant to the existing commercial arrangements. The first tranche of 425,532 Warrant Shares vested upon the execution of the Amazon Transaction Agreement. The remainder of the Warrant Shares will vest based on Amazon’s payment of up to $600 million to us in connection with Amazon’s receipt of commercial services from us. The exercise price for all Warrant Shares will be $9.96 per share. The Warrant Shares are exercisable through January 23, 2026. The Warrant provides for net share settlement that, if elected by the holders, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Warrant provides for certain adjustments that may be made to the exercise price and the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. Vested Warrant Shares are classified as equity instruments. Because the Warrant contains performance criteria (i.e. aggregate purchase levels) which Amazon must achieve for the Warrant Shares to vest, as detailed above, the final measurement date for each tranche of the Warrant Shares is the date on which performance is completed. Prior to the final measurement date, when achievement of the performance criteria has been deemed probable, a reduction in revenue equal to the percentage of completion to date will be recognized. The fair value of the Warrant Shares will be adjusted at each reporting period until they are earned. At March 31, 2018, the initial tranche of 425,532 Warrant Shares has vested. The amount of contra revenue attributed to these Warrant Shares is $2.5 million.

13. AMAZON TRANSACTION AGREEMENT

On January 23, 2018, we entered into a Transaction Agreement (the “Amazon Transaction Agreement”) with Amazon.com, Inc. (“Amazon”), pursuant to which we agreed to issue to Amazon.com NV Investment Holdings LLC, a wholly owned subsidiary of Amazon (“NV Investment”), a warrant (the “Warrant”) to acquire up to 4,000,000 shares (the “Warrant Shares”) of our common stock, par value $0.01 per share (“Common Stock”), subject to certain vesting events. We entered into the Amazon Transaction Agreement in connection with existing commercial arrangements between us and Amazon pursuant to which we provide and will continue to provide commercial services to Amazon. The vesting of the Warrant shares, described below, is linked to payments made by Amazon or its affiliates (directly or indirectly through third parties) pursuant to the existing commercial arrangements.

The first tranche of 425,532 Warrant Shares vested upon the execution of the Amazon Transaction Agreement. The remainder of the Warrant Shares will vest based on Amazon’s payment of up to $600 million to us in connection with Amazon’s receipt of commercial services from us. The exercise price for all Warrant Shares will be $9.96 per share. The Warrant Shares are exercisable through January 23, 2026.

The Warrant provides for net share settlement that, if elected by the holders, will reduce the number of shares issued upon exercise to reflect net settlement of the exercise price. The Warrant provides for certain adjustments that may be made to the exercise price and the number of shares of common stock issuable upon exercise due to customary anti-dilution provisions based on future events. Vested Warrant Shares are classified as equity instruments.

Because the Warrant contains performance criteria (i.e. aggregate purchase levels) which Amazon must achieve for the Warrant Shares to vest, as detailed above, the final measurement date for each tranche of the Warrant Shares is the date on which performance is completed. Prior to the final measurement date, when achievement of the performance criteria has been deemed probable, a reduction in revenue equal to the percentage of completion to date will be recognized. The fair value of the Warrant Shares will be adjusted at each reporting period until they are earned.

At March 31, 2018, the initial tranche of 425,532 Warrant Shares has vested. The amount of contra revenue attributed to these Warrant Shares is $2.5 million.