Accumulated Other Comprehensive Loss (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	$ (1,958,843)	$ (1,837,713)
Other comprehensive income (loss)
Other comprehensive income (loss) before reclassifications	58,292	(126,574)
Amounts reclassified from accumulated other comprehensive income (loss)	5,449	5,444
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(5,449)	(5,444)
Total other comprehensive income (loss)	63,741	(121,130)
Accumulated other comprehensive (loss) income, ending balance	(1,895,102)	(1,958,843)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	(1,980,940)	(1,866,388)
Other comprehensive income (loss)
Other comprehensive income (loss) before reclassifications	59,035	(114,552)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive income (loss)	59,035	(114,552)
Accumulated other comprehensive (loss) income, ending balance	(1,921,905)	(1,980,940)
Net Minimum Pension Liability
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	22,097	28,675
Other comprehensive income (loss)
Other comprehensive income (loss) before reclassifications	(743)	(12,022)
Amounts reclassified from accumulated other comprehensive income (loss)	5,449	5,444
Total other comprehensive income (loss)	4,706	(6,578)
Accumulated other comprehensive (loss) income, ending balance	$ 26,803	$ 22,097