Note 7 - Debt	9 Months Ended
Jan. 31, 2020
Notes to Financial Statements
Debt Disclosure [Text Block]	7. Debt: At January 31, 2020 , the Company was utilizing a promissory note in the form of a line of credit totaling $5,000. The unused line at January 31, 2020 was $5,000 . The line of credit is due on demand and is collateralized by the first and second positions on all assets of the Company. At January 31, 2020 , there was one note with an interest rate of 6.25% collateralized by aircraft security agreements totaling $1,843 . This note was used for the purchase and modifications of collateralized aircraft. This note matures in January 2023. At January 31, 2020 , there is one note totaling $229 collateralized by real estate in Dodge City, Kansas. The interest rate on this note is 6.25% . This note matures in June 2024. At January 31, 2020 , there is one note collateralized by equipment with a balance of $47 . The interest rate on this note is 4.5% . This note matures in April 2022. At January 31, 2020 , there is one note at a bank totaling $411 with an interest rate of 4.89% . The proceeds were used primarily to refinance obligations with BHCI (a non-controlling owner of BHCMC, LLC). This note matures in May 2020. We are not in default of any of our notes as of January 31, 2020 . We believe that our current banks will provide the necessary capital for our business operations. However, we continue to maintain contact with other banks that have an interest in funding our working capital needs to continue our growth in operations in 2020 and beyond.

Debt: At

January 31, 2020

, the Company was utilizing a promissory note in the form of a line of credit totaling

$5,000.

The unused line at

January 31, 2020

was

$5,000

. The line of credit is due on demand and is collateralized by the

first

and

second

positions on all assets of the Company.

January 31, 2020

, there was

one

note with an interest rate of

6.25%

collateralized by aircraft security agreements totaling

$1,843

. This note was used for the purchase and modifications of collateralized aircraft. This note matures in

January 2023.

January 31, 2020

, there is

one

note totaling

$229

collateralized by real estate in Dodge City, Kansas. The interest rate on this note is

6.25%

. This note matures in

June 2024.

January 31, 2020

, there is

one

note collateralized by equipment with a balance of

$47

. The interest rate on this note is

4.5%

. This note matures in

April 2022.

January 31, 2020

, there is

one

note at a bank totaling

$411

with an interest rate of

4.89%

. The proceeds were used primarily to refinance obligations with BHCI (a non-controlling owner of BHCMC, LLC). This note matures in

May 2020.

We are

not

in default of any of our notes as of

January 31, 2020

We believe that our current banks will provide the necessary capital for our business operations. However, we continue to maintain contact with other banks that have an interest in funding our working capital needs to continue our growth in operations in

2020

and beyond.