NOTE 16 - SEGMENT AND RELATED INFORMATION - (Details Narrative)	12 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Note 16 - Segment And Related Information -
Export Sales of medical equipment	5.30%	41.50%	55.90%
Foreign Revenues of service and repair of medical equipment	5.90%	5.00%	4.60%

Foreign Revenues of service and repair of medical equipment

No definition available.

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