The maximum funded debt to EBITDA ratio allowed under the covenant of the debt instrument.

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Requirement for fixed charge coverage ratio under the debt agreement.

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The number of debt instruments.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Amount of assets pledged to secure a debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of cash outflow for principal payment on finance lease.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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No definition available.

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Amount of a short-term obligation that has been excluded from current liabilities in the balance sheet because of a refinancing of the obligation.

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Note 6 - Long Term Debt (Details Textual)		3 Months Ended	12 Months Ended
Note 6 - Long Term Debt (Details Textual)	Apr. 09, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2022
Finance Lease, Principal Payments			$ 8,919,000	$ 3,199,000
Gain (Loss) on Extinguishment of Debt, Total			(401,000)	$ 0
The Credit Agreement [Member] \| Fifth Third Bank, N.A. [Member]
Number of Debt Instruments	3
Debt Instrument, Term (Year)	5 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 22,000,000
Gain (Loss) on Extinguishment of Debt, Total			(401,000)
Debt Issuance Costs, Net, Total			$ 310,000
Debt Instrument, Covenant, Minimum Fixed Charge Coverage Ratio	1.25
Debt Instrument, Covenant, Maximum Funded Debt to EDITDA Ratio	3.0
The Credit Agreement, First Loan and Second Loan Facility [Member] \| Fifth Third Bank, N.A. [Member]
Debt Instrument, Face Amount	$ 9,500,000
The Credit Agreement, First Loan and Second Loan Facility [Member] \| Fifth Third Bank, N.A. [Member] \| Forecast [Member]
Debt Instrument, Interest Rate, Stated Percentage					48.00%
The Credit Agreement, First Loan Facility [Member] \| Fifth Third Bank, N.A. [Member]
Finance Lease, Principal Payments		$ 1,665,000
Cash, Ending Balance	1,061,000
The Credit Agreement, Second Loan Facility [Member] \| Fifth Third Bank, N.A. [Member]
Debt Instrument, Face Amount	5,500,000
Finance Lease, Principal Payments	$ 5,026,000
The Credit Agreement, Third Loan Facility [Member] \| Fifth Third Bank, N.A. [Member] \| Revolving Credit Facility [Member]
Debt Instrument, Term (Year)	5 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 7,000,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.25%
The Credit Agreement, Third Loan Facility [Member] \| Fifth Third Bank, N.A. [Member] \| Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	3.00%
Notes Payable, Other Payables [Member]
Number of Debt Instruments				7
Debt Issuance Costs, Net, Total			$ 294,000
Notes Payable, Other Payables [Member] \| Trade Accounts Receivable [Member]
Debt Instrument, Collateral Amount				$ 1,718,000
Notes Payable, Other Payables [Member] \| Gamma Knife Units [Member]
Debt Instrument, Collateral Amount				$ 11,023,000
Gamma Knife Debt and Finance Leases [Member]
Short-term Debt, Refinanced, Amount	$ 6,774,000