Cash Deposits and Other Assets

3 Months Ended

Mar. 31, 2018

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

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



	March 31,		December 31,
	2018		2017

Amounts associated with liability insurance program:
Insurance collateral deposits	$	3,517	$	3,767
Excess loss fund	1,959		2,284
Accumulated interest income	627		814
Other amounts:
State collateral deposits	53		57
Materials and supplies	331		273
Other	36		37
Total	$	6,523	$	7,232

We have established certain deposits to support participation in our liability insurance program and remittance of state crude oil severance taxes and other state collateral deposits. Insurance collateral deposits are held by the insurance company to cover past or potential open claims based upon a percentage of the maximum assessment under our insurance policies. Insurance collateral deposits are invested at the discretion of our insurance carrier. Excess amounts in our loss fund represent premium payments in excess of claims incurred to date that we may be entitled to recover through settlement or commutation as claim periods are closed. Interest income is earned on the majority of amounts held by the insurance companies and will be paid to us upon settlement of policy years.