Asset Retirement Obligations

12 Months Ended

Dec. 31, 2018

Asset Retirement Obligations [Abstract]

Note H – Asset Retirement Obligations

When the agreement with NYU relating to the restored gamma knife was finalized in 2014, the Company estimated the cost to remove the gamma knife at the end of the agreement in 2021 to be $620,000. The estimated present value of this liability was $517,000 at December 31, 2017.

	2017

Asset retirement obligations, start of year	$	491,000

Accretion of liability		26,000

Asset retirement of obligations, end of the year	$	517,000

At September 30, 2018, the estimated present value of this liability was $537,000 with associated accretion of $20,000 during 2018. Effective October 1, 2018, when the NYU agreement was determined to be a to be a sales-type sublease between USN, the lessor, and NYU, the lessee, the asset retirement obligation was derecognized (Note E). As a result, no asset retirement obligation remains on the Company’s Consolidated Balance Sheet at December 31, 2018.