Intangible Assets - Amortizable intangible assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortizable intangible assets
Gross Carrying Amount	$ 3,500	$ 3,500
Accumulated Amortization	(3,053)	(2,994)
Net	$ 447	506
Customer relationships
Amortizable intangible assets
Weighted Average Life (Years)	15 years
Gross Carrying Amount	$ 3,500	3,500
Accumulated Amortization	(3,053)	(2,994)
Net	$ 447	$ 506