NOTE 3 - ACCOUNTS RECEIVABLE, MEDICAL RECEIVABLE AND MANAGEMENT AND OTHER FEES RECEIVABLE - (Details Narrative)	3 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Note 3 - Accounts Receivable Medical Receivable And Management And Other Fees Receivable -
Percentage of PC's net revenue derived from no-fault and personal injury protection claims	66.00%	67.00%
Percentage of consolidated net revenue from management fees charged to related party medical practices	12.80%	11.00%

Percentage of PCs net revenue derived from nofault and personal injury protection claims.

No definition available.

Name:	FONR_PercentageOfPcsNetRevenueDerivedFromNofaultAndPersonalInjuryProtectionClaims
Namespace Prefix:	FONR_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration