Shareholders’ Equity - Narrative (Details) $ / shares in Units, $ in Thousands									3 Months Ended						9 Months Ended		12 Months Ended
	Jun. 15, 2023 $ / shares	May 09, 2023 USD ($) shares	Apr. 20, 2023 $ / shares shares	Nov. 20, 2022 shares	Aug. 12, 2022 $ / shares shares	Aug. 04, 2022 USD ($)	Nov. 03, 2021 USD ($) shares	Aug. 13, 2021	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($) shares	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($) shares	Dec. 31, 2022 USD ($)	Aug. 07, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock, net of offering costs									$ (9)	$ 10,855	$ 106,057	$ 8,530	$ 16,392	$ 203,796
Business days within start of effective date															10 days
Class of warrant or right, number of shares called by warrants or rights | shares					166,667
Class of warrant or right, exercise price of warrants or rights (in usd per share) | $ / shares					$ 15.00
Number of trading days															30 days
Class of warrant or right, weighted average closing share price (in usd per share) | $ / shares															$ 30.00
Warrants and rights outstanding, term									1 year 8 months 12 days						1 year 8 months 12 days
Share-based payment arrangement, expense									$ 12,707			$ 12,249			$ 39,451	$ 42,540
Share-based compensation arrangement by share-based payment award, options, grants in period, gross (in shares) | shares												0			636,298	0
Share-based compensation arrangements by share-based payment award, options, grants in period, weighted average exercise price (in usd per share) | $ / shares															$ 2.02
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount									4,500						$ 4,500
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition															1 year 1 month 6 days
Performance period															5 years
Number of shares issued upon vesting of restricted stock units | shares															186,667
Chief executive officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, grants in period, gross (in shares) | shares															636,298
Warrant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Class of warrant or right, outstanding | shares					400,000
Share-based payment arrangement, expense									100						$ 200
Share-based payment arrangement, nonvested award, cost not yet recognized, amount									100						100
Total Intrinsic Value									0						$ 0		$ 0
Weighted Average Remaining Contractual Life (Years)															8 years 9 months 18 days		9 years 7 months 6 days
Share-Based Payment Arrangement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, options, vested in period, fair value															$ 800
Share-based compensation arrangements by share-based payment award, options, grants in period, weighted average exercise price (in usd per share) | $ / shares	$ 2.02
Market and service condition based options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, cost not yet recognized, amount									1,400						$ 1,400
Share-based compensation arrangement by share-based payment award, options, grants in period, gross (in shares) | shares															0	0
Performance shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense									100						$ 200
Share-based compensation arrangement by share-based payment award, options, grants in period, gross (in shares) | shares			4,100,000
Share-based compensation arrangement by share-based payment award, options, vested in period, fair value															$ 1,200
Share-based compensation arrangement by share-based payment award, options, vested, number of shares | shares															820,000
Grants in period, weighted average grant date fair value (in usd per share) | $ / shares			$ 10.00
Options, nonvested, number of shares | shares			3,280,000
Performance shares | Measurement Input, EBITDA Multiple
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage			50.00%
Performance shares | Measurement Input, Revenue Criteria
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage			25.00%
Performance shares | Measurement Input, Subscribers Achieved
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage			25.00%
Stock Options And Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, accelerated cost															$ 0	$ 1,900
Service-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense															23,000
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount									14,200						$ 14,200
Granted (in shares) | shares															1,600,000
Share-based payment arrangement, expense, after tax									1,900						$ 5,800
Service-Based Restricted Stock Awards | Accrued Expenses And Other Current Liabilities And Other Long-Term Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount									6,100						6,100
Performance-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense									700						$ 2,200
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition															2 years
Granted (in shares) | shares															400,000
Share-based payment arrangement, nonvested award, excluding option, cost not yet recognized, amount									5,700						$ 5,700
Total Intrinsic Value									2,400						2,400
Performance-Based Restricted Stock Awards | Accrued Expenses And Other Current Liabilities And Other Long-Term Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount									2,300						$ 2,300
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) | shares															3,442,228
Restricted stock units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount									45,600						$ 45,600
Total Intrinsic Value									33,700						$ 33,700
Award vesting period															4 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value															$ 7,500
Weighted Average Remaining Contractual Life (Years)															2 years 6 months
Performance based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense									2,500			$ 3,400			$ 8,200	$ 14,400
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount									$ 33,300						$ 33,300
Granted (in shares) | shares							1,900,000								241,012
Award vesting period															5 years
Share based compensation arrangement by share based payment award non options granted in period fair value		$ 500					$ 64,400
Shares received at target performance | shares		730,338
Shares received at maximum performance | shares		1,095,507
Framework Agreement - Projects
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, shares, percentage															0.80
Framework Agreement - Network
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, shares, percentage															0.20
2020 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of additional shares authorized | shares			17,500,000	2,500,000
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares available for grant | shares									0						0
2022 Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares available for grant | shares									0						0
2023 Inducement Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares available for grant | shares																		3,000,000
Share-based Payment Arrangement, Period One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Collaborative agreement, common shares determination, basis amount															$ 10,000
Collaborative agreement, common shares determination, weighted average closing price trading day period															30 years
Stock issued during period, other, effective date anniversary business days period															10 years
Share-based Payment Arrangement, Period One | Service-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense															$ 7,000
Share-based Payment Arrangement, Period One | Performance-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense															1,700
Share-based Payment Arrangement, Period Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Collaborative agreement, common shares determination, basis amount															$ 10,000
Collaborative agreement, common shares determination, weighted average closing price trading day period															30 years
Stock issued during period, other, effective date anniversary business days period															10 years
Share-based Payment Arrangement, Period Two | Service-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense															$ 8,000
Share-based Payment Arrangement, Period Two | Performance-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense															2,000
Share-based Payment Arrangement, Period Three | Service-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense															$ 8,000
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition															3 years
Share-based Payment Arrangement, Period Three | Performance-Based Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment arrangement, expense															$ 2,000
Restricted Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock issued during period, shares, other | shares					2,000,000
2022 ATM Offering
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Sale of stock, consideration received on transaction															116,900
Payments of stock issuance costs															$ 2,700
Number of shares issued in transaction | shares															81,694,729
Sale of stock, price per share (in usd per share) | $ / shares									$ 1.46						$ 1.46
Sale of stock, shares remaining to be sold, amount									$ 156,300						$ 156,300
Evercore Group LLC Needham and Company LLC and Oppenheimer and Co Inc | Sales agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock, net of offering costs						$ 350,000
Commission rate percentage								3.00%