Other Assets (Tables)

12 Months Ended

Dec. 31, 2020

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,
	2020		2019
Amounts associated with liability insurance program:
Insurance collateral deposits	$	714	$	1,233
Excess loss fund	617		943
Accumulated interest income	449		609
Other amounts:
State collateral deposits	31		37
Materials and supplies	488		477
Other	84		—
Total	$	2,383	$	3,299