Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Insurance collateral deposits	$ 390	$ 721
Excess loss fund	622	622
Accumulated interest income	523	489
State collateral deposits	36	36
Materials and supplies	1,209	574
Debt issuance costs	392	292
Other	273	293
Total other assets	$ 3,445	$ 3,027