ACCOUNTS RECEIVABLE, MEDICAL RECEIVABLE AND MANAGEMENT AND OTHER FEES RECEIVABLE (Details Narrative) - USD ($) $ in Thousands	3 Months Ended
Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023
Receivables [Abstract]
Accounts receivable - long term	$ 500		$ 710
Percentage of net revenue derived from no-fault and personal injury protection claim	67.80%	69.00%
Percentage of consolidated net revenue from management fees charged to related party medical practices	11.60%	12.90%

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

No definition available.

Name:	FONR_PercentageOfPcsNetRevenueDerivedFromNofaultAndPersonalInjuryProtectionClaims
Namespace Prefix:	FONR_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration