Consolidated Statements of Comprehensive Income - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Consolidated Statements of Comprehensive Income
Net income	$ 1,417,540	$ 1,760,305
Foreign currency translation adjustment	30,812	72,830
Total comprehensive income	$ 1,448,352	$ 1,833,135