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Condensed Consolidated Statement of Comprehensive Income - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Details        
Net earnings $ 3,480,054 $ 3,238,217 $ 5,410,372 $ 20,164,140
Other comprehensive income:        
Foreign currency translation adjustments 954 (1,929) 2,046 (1,929)
Other comprehensive income, before income tax 954 (1,929) 2,046 (1,929)
Income tax benefit (238) 481 (510) 481
Other comprehensive income, net of income tax 716 (1,448) 1,536 (1,448)
Comprehensive income $ 3,480,770 $ 3,236,769 $ 5,411,908 $ 20,162,692