Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Cash Flows from Operating Activities:
Net income	$ 6,711us-gaap_ProfitLoss	$ 6,668us-gaap_ProfitLoss
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,776us-gaap_DepreciationAndAmortization	1,954us-gaap_DepreciationAndAmortization
Provision for bad debts	6,820FONR_ProvisionForBadDebts	4,044FONR_ProvisionForBadDebts
Non-cash considerations	76FONR_NoncashConsiderations	155FONR_NoncashConsiderations
Compensatory element of stock issuances	53	86
(Increase) decrease in operating assets, net:
Accounts, management fee and medical receivable(s)	(9,360)	(7,261)
Notes receivable	103us-gaap_IncreaseDecreaseInReceivables	60us-gaap_IncreaseDecreaseInReceivables
Costs and estimated earnings in excess of billings on uncompleted contracts	34	(609)
Inventories	80us-gaap_IncreaseDecreaseInInventories	(485)us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets	131	210
Other assets	8	42
Increase (decrease) in operating liabilities, net:
Accounts payable	(84)	189
Other current liabilities	(178)	1,580
Customer advances	(108)	183
Billings in excess of costs and estimated earnings on uncompleted contracts	26
Other liabilities	(169)	(58)
Due to related medical practices	(6)	(2)
Income tax payable		(20)
Net cash provided by operating activities	5,913	6,767
Cash Flows from Investing Activities:
Purchases of property and equipment	(55)	(277)
Cost of patents	(67)	(58)
Net cash used in investing activities	(122)	(335)
Cash Flows from Financing Activities:
Repayment of borrowings and capital lease obligations	(1,543)us-gaap_RepaymentsOfNotesPayable	(2,195)us-gaap_RepaymentsOfNotesPayable
Distributions to noncontrolling interests	(2,530)	(2,696)
Repayment of notes receivable from employee stockholders	4us-gaap_RepaymentsOfOtherDebt	13us-gaap_RepaymentsOfOtherDebt
Net cash used in financing activities	(4,069)	(4,878)
Net Increase in Cash and Cash Equivalents	1,722	1,554
Cash and Cash Equivalents - Beginning of Period	9,952	7,871
Cash and Cash Equivalents - End of Period	$ 11,674	$ 9,425

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