COMMITMENTS AND CONTINGENCIES (Details Textual) - USD ($)	1 Months Ended		12 Months Ended
	Dec. 20, 2018	Jul. 21, 2017	Dec. 31, 2019	Sep. 06, 2019
Commitments And Contingencies [Line Items]
Commitment period		5 years
Gamma Knife Perfexion System
Commitments And Contingencies [Line Items]
Long-term purchase commitment amount			$ 6,910,000
LINAC system
Commitments And Contingencies [Line Items]
Long-term purchase commitment amount			$ 10,096,000
Commitment period			9 years
Mevion Medical Systems Inc
Commitments And Contingencies [Line Items]
Long-term purchase commitment amount			$ 34,000,000
Deposits for future purchase			$ 2,250,000
Increase in annual service fees	$ 250,000
Purchase agreement annual prepayment				$ 250,000