Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 1,263,124	$ 566,361
State	32,737	(5,648)
Foreign	693,297	984,469
Total Current	1,989,158	1,545,182
Deferred:
Federal	431,454	83,290
State	20,206	17,233
Total Deferred	451,660	100,523
Total Income Tax Expense (Benefit)	$ 2,440,818	$ 1,645,705