Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of lessee's right to use underlying asset under operating lease.

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SEGMENT INFORMATION - Narrative (Details)	3 Months Ended
SEGMENT INFORMATION - Narrative (Details)	Mar. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of business segments \| segment	2
Goodwill	$ 46,138,036	$ 46,138,036
Right-of-use assets	6,035,660
Training and Simulation Division
Segment Reporting Information [Line Items]
Goodwill	24,435,641		$ 24,435,641
Right-of-use assets	519,496
Power Systems Division
Segment Reporting Information [Line Items]
Goodwill	21,702,395		$ 21,702,395
Right-of-use assets	$ 5,516,164