Note 9 - Debt (Details Textual) $ in Thousands	1 Months Ended	9 Months Ended
May 31, 2020 USD ($)	Jan. 31, 2023 USD ($)
Line of Credit Facility, Interest Rate at Period End		3.65%
Line of Credit Facility, Maximum Borrowing Capacity		$ 2,000
Line of Credit Facility, Remaining Borrowing Capacity		2,000
Notes Collateralized by BHCMC's Assets and Compensation Due under State Management Contract Due December 2025 [Member]
Notes Payable, Total		31,125
Debt Issuance Costs, Net, Total		$ 229
Debt Instrument, Interest Rate, Stated Percentage		5.32%
Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid		$ 19,250
Number of Notes		1
Notes Collateralized by BHCMC's Assets and Compensation Due under State Management Contract Due December 2027 [Member]
Notes Payable, Total		$ 10,722
Debt Issuance Costs, Net, Total		$ 102
Debt Instrument, Interest Rate, Stated Percentage		5.75%
Debt Instrument, Term (Year)		5 years
Debt Service Coverage Ratio		1.30%
Debt Instrument, Aggregate Unrestricted Cash Requirement		$ 1,500
Notes Collateralized by Aircraft Security Agreements, Due January 2023 [Member]
Notes Payable, Total		$ 55
Debt Instrument, Interest Rate, Stated Percentage		6.25%
Note Collateralized by Real Estate Due June 2024 [Member]
Notes Payable, Total		$ 164
Debt Instrument, Interest Rate, Stated Percentage		6.25%
Number of Notes		1
Note One Collateralized by Real Estate Due March 2029 [Member]
Notes Payable, Total		$ 987
Debt Instrument, Interest Rate, Stated Percentage		1.75%
Note Two Collateralized by Real Estate Due March 2029 [Member]
Notes Payable, Total		$ 452
Debt Instrument, Interest Rate, Stated Percentage		1.75%
Note Collateralized by Aircraft Security Agreement [Member] \| Patriots Bank [Member]
Notes Payable, Total		$ 1,084
Debt Instrument, Interest Rate, Stated Percentage		4.35%
Note Collateralized by Equipment Due October 2025 [Member]
Notes Payable, Total		$ 46
Debt Instrument, Interest Rate, Stated Percentage		8.13%
Paycheck Protection Program CARES Act [Member]
Proceeds from Issuance of Long-term Debt, Total	$ 2,001

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Represents the number of notes.

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

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Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt.

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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.

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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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The effective interest rate at the end of the reporting period.

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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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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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