Fair Value Measurements - Schedule of roll forward of the Company's Level 3 instruments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value adjustments – warrant liability	$ 33	$ 1,783	$ 148	$ 4,500
Level III | Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	142		407
Fair value adjustments – warrant liability	(33)		(147)
Share settlement of World Energy liability	0		(151)
Ending balance	$ 109		$ 109