Intangible Assets and Goodwill Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 37,628	$ 40,447
Finite-Lived Intangible Assets, Accumulated Amortization	(33,047)	(33,047)
Finite-Lived Intangible Assets, Net	4,581	7,400
Carbon credits held for future use	0	2,077
Intangible Assets, Net	4,581	9,477
Supplier
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	37,525	39,084
Finite-Lived Intangible Assets, Accumulated Amortization	(32,944)	(31,708)
Capitalized Development [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	103	103
Finite-Lived Intangible Assets, Accumulated Amortization	(103)	(103)
Channel partner relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	0	730
Finite-Lived Intangible Assets, Accumulated Amortization	0	(720)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	0	380
Finite-Lived Intangible Assets, Accumulated Amortization	0	(366)
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	0	150
Finite-Lived Intangible Assets, Accumulated Amortization	$ 0	$ (150)