Accumulated Other Comprehensive Loss - Accumulated Comprehensive Loss (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accumulated other comprehensive income (loss), beginning balance	$ (1,987,870)	$ (2,057,985)
Change in net prior service credit and actuarial losses, net of tax	514,271	$ 143,906
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201802Member
Translation adjustment	647,632	$ 45,223
Accumulated other comprehensive income (loss), ending balance	(825,967)	(1,987,870)
Revision of Prior Period, Accounting Standards Update, Adjustment
Accumulated other comprehensive income (loss), beginning balance		(119,014)
Foreign Currency Translation Adjustment
Accumulated other comprehensive income (loss), beginning balance	(1,473,599)	(1,518,822)
Translation adjustment	647,632	45,223
Accumulated other comprehensive income (loss), ending balance	(825,967)	(1,473,599)
Net Prior Service Credit and Actuarial Losses
Accumulated other comprehensive income (loss), beginning balance	(514,271)	(539,163)
Change in net prior service credit and actuarial losses, net of tax	$ 514,271	$ 143,906
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201802Member
Accumulated other comprehensive income (loss), ending balance		$ (514,271)
Net Prior Service Credit and Actuarial Losses | Revision of Prior Period, Accounting Standards Update, Adjustment
Accumulated other comprehensive income (loss), beginning balance		$ (119,014)