Other Assets (Tables)

12 Months Ended

Dec. 31, 2021

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of other assets

Components of other assets were as follows at the dates indicated (in thousands):

	December 31,
	2021		2020
Amounts associated with liability insurance program:
Insurance collateral deposits	$	721	$	714
Excess loss fund	622		617
Accumulated interest income	489		449
Other amounts:
State collateral deposits	36		31
Materials and supplies	574		488
Debt issuance costs	292		—
Other	293		84
Total other assets	$	3,027	$	2,383