Finance Leases	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Finance Leases	Finance LeasesFinance lease obligations consist of nine leases with three financing companies, collateralized by Gamma Knife and PBRT equipment, the individual customer contracts, and related accounts receivable at March 31, 2020. As of March 31, 2020, obligations under finance leases on the Condensed Consolidated Balance Sheets were $10,710,000. See disclosure of future payments below under the heading “Commitments”.