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Note 9 - Debt (Details Textual)
$ in Thousands
1 Months Ended 3 Months Ended
May 31, 2020
USD ($)
Jul. 31, 2022
USD ($)
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   32,229
Debt Issuance Costs, Net, Total   $ 252
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   $ 12,097
Debt Issuance Costs, Net, Total   $ 118
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   $ 377
Debt Instrument, Interest Rate, Stated Percentage   6.25%
Note Collateralized by Real Estate Due June 2024 [Member]    
Notes Payable, Total   $ 175
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   $ 1,067
Debt Instrument, Interest Rate, Stated Percentage   1.75%
Note Two Collateralized by Real Estate Due March 2029 [Member]    
Notes Payable, Total   $ 489
Debt Instrument, Interest Rate, Stated Percentage   1.75%
Note Collateralized by Aircraft Security Agreement [Member] | Patriots Bank [Member]    
Notes Payable, Total   $ 1,160
Debt Instrument, Interest Rate, Stated Percentage   4.35%
Note Collateralized by Equipment Due October 2025 [Member]    
Notes Payable, Total   $ 50
Debt Instrument, Interest Rate, Stated Percentage   8.13%
Paycheck Protection Program CARES Act [Member]    
Proceeds from Issuance of Long-term Debt, Total $ 2,001