Warrant Transaction Agreements - Amazon.com, Inc. Transaction Agreement (Details) $ / shares in Units, $ in Thousands			3 Months Ended
	Aug. 24, 2022 USD ($) $ / shares D shares	Jul. 20, 2020 D	Mar. 31, 2024 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) shares	Dec. 31, 2023 shares	Jun. 30, 2023 USD ($) shares	Apr. 04, 2017 shares
Class of Warrant or Right [Line Items]
Selling, General and Administrative Expense | $			$ 77,959	$ 104,016
(Benefit)/loss on service contracts | $			$ 3,809	$ 221
2017 Amazon Transaction Agreement
Class of Warrant or Right [Line Items]
Shares of common stock that can be purchased from warrants issued (in shares)							55,286,696
Number of warrants exercised to date			34,917,912	27,600,000
Warrant shares vested (in shares)			55,286,696	55,286,696
Provision for common stock warrants | $			$ 0	$ 200
2017 Amazon Transaction Agreement | Maximum
Class of Warrant or Right [Line Items]
Shares of common stock that can be purchased from warrants issued (in shares)							55,286,696
2017 Amazon Transaction Agreement | Warrant Issued Tranche Three [Member]
Class of Warrant or Right [Line Items]
Threshold trading days | D		30
2017 Amazon Transaction Agreement | Amazon
Class of Warrant or Right [Line Items]
Number of warrants exercised (in shares)			34,917,912	34,917,912
Tranche one of warrants issued with the Amazon.com, Inc transaction agreement | Warrant Issued Tranche One [Member]
Class of Warrant or Right [Line Items]
Contract asset | $			$ 19,300
Tranche one of warrants issued with the Amazon.com, Inc transaction agreement | Warrant Issued Tranche Two [Member]
Class of Warrant or Right [Line Items]
Contract asset | $			19,300
Tranche one of warrants issued with the Amazon.com, Inc transaction agreement | Amazon
Class of Warrant or Right [Line Items]
Provision for common stock warrants | $			0
Warrant Issued With Amazon
Class of Warrant or Right [Line Items]
Provision for common stock warrants | $			$ 700
2022 Amazon transaction agreement
Class of Warrant or Right [Line Items]
Minimum percentage of warrants vested and exercisable automatically	60.00%
Shares of common stock that can be purchased from warrants issued (in shares)	16,000,000
Number of warrants exercised to date			0	0
Warrant shares vested (in shares)			2,000,000		2,000,000
Provision for common stock warrants | $				$ 1,100
2022 Amazon transaction agreement | Maximum
Class of Warrant or Right [Line Items]
Shares of common stock that can be purchased from warrants issued (in shares)	16,000,000
2022 Amazon transaction agreement | Warrants Tranches One Through Three [Member]
Class of Warrant or Right [Line Items]
Warrant shares vested (in shares)	9,000,000
Exercise price of warrants (in dollars per share) | $ / shares	$ 22.9841
Fair value of warrants per share | $ / shares	$ 20.36
2022 Amazon transaction agreement | Warrants Tranches One Through Three [Member] | Risk free interest rate
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input	0.0315
2022 Amazon transaction agreement | Warrants Tranches One Through Three [Member] | Volatility
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input	0.7500
2022 Amazon transaction agreement | Warrants Tranches One Through Three [Member] | Expected average term
Class of Warrant or Right [Line Items]
Expected average term	7 years
2022 Amazon transaction agreement | Warrants Tranches One Through Three [Member] | Exercise price
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input | $ / shares	22.98
2022 Amazon transaction agreement | Warrants Tranches One Through Three [Member] | Stock price
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input | $ / shares	20.36
2022 Amazon transaction agreement | Warrant Issued Tranche One [Member]
Class of Warrant or Right [Line Items]
Warrant shares vested (in shares)	1,000,000
Warrant charge capitalized | $	$ 20,400
2022 Amazon transaction agreement | Warrant Issued Tranche Two [Member]
Class of Warrant or Right [Line Items]
Warrant shares vested (in shares)						1,000,000
Warrant charge capitalized | $						$ 20,400
2022 Amazon transaction agreement | Warrant Issued Tranche Three [Member]
Class of Warrant or Right [Line Items]
Cash payments to be received under agreement | $	$ 1,000,000
Contract asset | $			$ 2,000
2022 Amazon transaction agreement | Warrant Issued Tranche Four [Member]
Class of Warrant or Right [Line Items]
Warrant shares vested (in shares)	7,000,000
Warrant percentage weighted average share price	90.00%
Threshold trading days | D	30
2022 Amazon transaction agreement | Warrant Issued Tranche Four [Member] | Risk free interest rate
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input			0.0412
2022 Amazon transaction agreement | Warrant Issued Tranche Four [Member] | Volatility
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input			0.9000
2022 Amazon transaction agreement | Warrant Issued Tranche Four [Member] | Expected average term
Class of Warrant or Right [Line Items]
Expected average term			4 years
2022 Amazon transaction agreement | Warrant Issued Tranche Four [Member] | Exercise price
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input | $ / shares			3.10
2022 Amazon transaction agreement | Warrant Issued Tranche Four [Member] | Stock price
Class of Warrant or Right [Line Items]
Warrants and rights outstanding measurement input | $ / shares			3.44
2022 Amazon transaction agreement | Vest in multiple tranches
Class of Warrant or Right [Line Items]
Vesting period	7 years
Cash payments to be received under agreement | $	$ 2,100,000
Warrant shares vested (in shares)	15,000,000