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Note 2 - Acquisitions - Assets Acquired and Liabilities Assumed by Contrail Aviation (Details) - USD ($) | Jun. 30, 2017 | Mar. 31, 2017 | [1] | Jul. 18, 2016
--- | --- | --- | --- | ---
ASSETS |  |  |
Goodwill | $ 4,417,605 | $ 4,417,605 |
Contrail Aviation Inc. [Member] |  |  |
ASSETS |  |  |
Goodwill |  |  | $ 4,227,205
Contrail Aviation Inc. [Member] | Contrail Aviation Support LLC. [Member] |  |  |
ASSETS |  |  |
Accounts receivable |  |  | 1,357,499
Inventories |  |  | 2,118,475
Prepaid expenses |  |  | 30,121
Property and equipment |  |  | 33,095
Total assets |  |  | 8,656,095
LIABILITIES |  |  |
Accounts payable |  |  | 366,575
Accrued expenses |  |  | 43,652
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Earnout Liability |  |  | 2,900,000
Total liabilities |  |  | 3,310,227
Net Assets |  |  | 5,345,868
Contrail Aviation Inc. [Member] | Contrail Aviation Support LLC. [Member] | Noncompete Agreements [Member] |  |  |
ASSETS |  |  |
Intangible assets |  |  | 69,700
Contrail Aviation Inc. [Member] | Contrail Aviation Support LLC. [Member] | Trade Names [Member] |  |  |
ASSETS |  |  |
Intangible assets |  |  | 322,000
Contrail Aviation Inc. [Member] | Contrail Aviation Support LLC. [Member] | Certification Marks [Member] |  |  |
ASSETS |  |  |
Intangible assets |  |  | 47,000
Contrail Aviation Inc. [Member] | Contrail Aviation Support LLC. [Member] | Customer Relationships [Member] |  |  |
ASSETS |  |  |
Intangible assets |  |  | $ 451,000
[1] | Derived from audited consolidated financial statements

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