Cash Deposits and Other Assets (Tables)

12 Months Ended

Dec. 31, 2019

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

Components of cash deposits and other assets

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

	December 31,
	2019		2018
Amounts associated with liability insurance program:
Insurance collateral deposits	$	1,233	$	1,453
Excess loss fund	943		1,916
Accumulated interest income	609		788
Other amounts:
State collateral deposits	37		57
Materials and supplies	477		443
Total	$	3,299	$	4,657