Note 17 - Commitments and Contingencies (Details Textual) - Contrail Aviation Inc. [Member] - USD ($)	Sep. 30, 2018	Jul. 18, 2016
Business Combination, Contingent Consideration, Liability, Total	$ 1,972,000
Accrued Expense [Member]
Business Combination, Contingent Consideration, Liability, Current	1,516,000
Other Noncurrent Liabilities [Member]
Business Combination, Contingent Consideration, Liability, Noncurrent	456,000
Contrail Aviation Support LLC. [Member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value High, Per Year		$ 1,500,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		3,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Earnout Liability		$ 2,900,000
Business Combination, Contingent Consideration Arrangement, Earnout Payment	$ 1,000,000

Represents information about earnout payment payable.

No definition available.

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid per year.

+ References

No definition available.

+ Details

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- Definition

The amount of earnout liabilities assumed at the acquisition date.

+ References

No definition available.

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- Definition

+ References

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

+ References

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

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