Note 2 - Acquisitions (Details Textual)							1 Months Ended	3 Months Ended		9 Months Ended		17 Months Ended
	Dec. 15, 2017 USD ($)	Jun. 07, 2017 USD ($)	May 02, 2017 USD ($)	Oct. 31, 2016 USD ($)	Oct. 03, 2016 USD ($) a	Jul. 18, 2016 USD ($)	May 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)	Oct. 31, 2017 USD ($)	Mar. 31, 2017 USD ($)
Proceeds from Noncontrolling Interests								$ 252,000		$ 252,000
Payments to Noncontrolling Interests								948,000
Redeemable Minority Interest, Period Increase (Decrease)										554,000
Deferred Income Tax Expense (Benefit)										(102,566)
Business Combination, Bargain Purchase, Gain Recognized, Amount, Net										501,880
Goodwill								4,417,605		4,417,605		$ 4,417,605		$ 4,417,605	[1]
Chief Investment Officer [Member]
Annual Salary After the Acquisition	$ 50,000
Chief Operating Officer and Chief Financial Officer [Member]
Annual Salary After the Acquisition	125,000
Contrail Aviation Inc. [Member]
Business Combination, Contingent Consideration Arrangement, EBITDA During Earnout Period												2,100,000
Business Combination, Contingent Consideration Arrangement, Earnout Payment Respect Earnout Period												1,000,000
Goodwill						$ 4,227,205
Contrail Aviation Inc. [Member] | Other Noncurrent Liabilities [Member]
Business Combination, Contingent Consideration Arrangement, Earnout Payment														$ 2,900,000
Business Combination, Contingent Consideration, Liability								$ 1,900,000		$ 1,900,000		$ 1,900,000
Jet Yard, LLC [Member]
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Blue Clay Capital Management, LLC [Member]
Business Combination, Consideration Transferred	$ 1
Business Combination, Conversion Agreement, Aggregate Capital Accounts of Each Fund, Percent								1.00%		1.00%		1.00%
Business Combination, Conversion Agreement, Aggregate Capital Accounts of Each Fund, Amount								$ 100,000		$ 100,000		$ 100,000
Business Combination, Fair Value Amount for Each General Partnership Interest										227,000
Blue Clay Capital Management, LLC [Member] | BCCP LO [Member]
Business Combination, Conversion Agreement, Aggregate Capital Accounts of Each Fund, Amount								$ 10,000		10,000		$ 10,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member]
Payments to Acquire Businesses, Gross						$ 4,033,367
Business Combination, Equity Interests in Acquiree, Percentage						21.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents						$ 904,000
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
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 1 [Member]
Business Combination, Contingent Consideration Arrangement, Earnout Payment						0
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 1 [Member] | Maximum [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						1,500,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 2 [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						1,500,000
Business Combination, Contingent Consideration Arrangement, Earnout Payment						$ 1,500,000
Business Combination, Contingent Consideration Arrangement, Earnout Payment Calculation, Multiplier						2
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 2 [Member] | Maximum [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						$ 2,000,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 2 [Member] | Minimum [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						1,500,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 3 [Member]
Business Combination, Contingent Consideration Arrangement, Earnout Payment						1,000,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 3 [Member] | Maximum [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						4,000,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 3 [Member] | Minimum [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						2,000,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 4 [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						1,500,000
Business Combination, Contingent Consideration Arrangement, Earnout Payment						1,500,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 4 [Member] | Minimum [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						4,000,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 5 [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						15,000,000
Business Combination, Contingent Consideration Arrangement, Earnout Payment						3,000,000
Contrail Aviation Support LLC. [Member] | Contrail Aviation Inc. [Member] | EBITDA Range 5 [Member] | Minimum [Member]
Business Combination, Contingent Consideration Arrangements, EBITDA Threshold						$ 15,000,000
AirCo [Member] | Acquired Inventory and Principal Business Assets, and Assumed Specified Liabilities, of Aircraft Instrument and Radio Company, Incorporated, and Aircraft Instrument and Radio Services, Inc. [Member]
Payments to Acquire Businesses, Gross			$ 2,400,000				$ 2,400,000
Deferred Income Tax Expense (Benefit)										278,000
Business Combination, Bargain Purchase, Gain Recognized, Amount, Net										$ 502,000
Stratus Aero Partners LLC [Member] | Jet Yard, LLC [Member]
Payments to Acquire Businesses, Gross					$ 15,000
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Stratus Aero Partners LLC [Member] | Jet Yard, LLC [Member] | Lease Contract with Pinal Country, Arizona [Member]
Area of Total Facility | a					48.5
Lessee, Operating Lease, Renewal Term					30 years
Area of Lease Facility | a					2.6
Operating Lease, Lessee, Initial Annual Rent, Amount					$ 27,000
Operating Lease, Lessee, Annual Rent, After Annual Increments, Amount					$ 152,000
Operating Lease, Lessee, Annual Rent, Increase Percentage					5.00%
Operating Lease, Lessee, Annual Rent Increase, Incremental Period					3 years
Global Aviation Services, LLC [Member] | D&D GSE Support, Inc. [Member]
Payments to Acquire Businesses, Gross				$ 400,000
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High				100,000									$ 100,000
Payments to Acquire Business, Additional Payment After Closing, Amount				100,000
Payments to Acquire Business, Final Payment, Payable				100,000
Payments to Acquire Business, Final Payment, Payable, Monthly Installments, Amount				16,667
Business Combination, Consideration Transferred				700,000
Business Combination, Consideration Transferred, Liabilities Incurred				0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Tangible Assets				200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill				300,000
Goodwill				200,000
Global Aviation Partners Llc and Global Aviation Service [Member] | Jet Yard, LLC [Member]
Deferred Tax Assets, Net of Valuation Allowance, Current				$ 0
SAIC [Member] | TFS Partners [Member]
Payments to Acquire Equity Method Investments		$ 500,000
Equity Method Investment, Ownership Percentage		40.00%
TFS Partners [Member] | Fence Store LLC [Member]
Equity Method Investment, Ownership Percentage		60.00%

[1] Derived from audited consolidated financial statements