Annual report pursuant to Section 13 and 15(d)

SIGNIFICANT ACCOUNTING POLICIES - Contract Asset Changes (Details)

v3.10.0.1
SIGNIFICANT ACCOUNTING POLICIES - Contract Asset Changes (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Training and Simulation Division      
Contract with Customer Assets and Liabilities [Line Items]      
Net income (loss) $ 659,037 $ 955,022 $ 1,856,664
Power Systems Division      
Contract with Customer Assets and Liabilities [Line Items]      
Net income (loss) $ 656,665 $ 40,888 $ (57,384)