Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other comprehensive income (loss)
Accumulated other comprehensive (loss) income, beginning balance	$ (14,031,306)
Total other comprehensive loss, net of applicable taxes:	(13,153)	$ 19,392
Accumulated other comprehensive (loss) income, ending balance	(15,071,639)
Foreign Currency Translation
Other comprehensive income (loss)
Accumulated other comprehensive (loss) income, beginning balance	(1,926,826)	(1,921,905)
Other comprehensive income	(13,153)	19,392
Total other comprehensive loss, net of applicable taxes:	(13,153)	19,392
Accumulated other comprehensive (loss) income, ending balance	(1,939,979)	(1,902,513)
Net Minimum Pension Liability
Other comprehensive income (loss)
Accumulated other comprehensive (loss) income, beginning balance	33,566	26,803
Other comprehensive income	0	0
Total other comprehensive loss, net of applicable taxes:	0	0
Accumulated other comprehensive (loss) income, ending balance	33,566	26,803
Accumulated Other Comprehensive loss, net
Other comprehensive income (loss)
Accumulated other comprehensive (loss) income, beginning balance	(1,893,260)	(1,895,102)
Other comprehensive income	(13,153)	19,392
Total other comprehensive loss, net of applicable taxes:	(13,153)	19,392
Accumulated other comprehensive (loss) income, ending balance	$ (1,906,413)	$ (1,875,710)