Accumulated Other Comprehensive Loss (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	$ (1,703,214)	$ (1,511,290)
Other comprehensive (loss) income
Other comprehensive income (loss) before reclassifications	(142,841)	(198,045)
Amounts reclassified from accumulated other comprehensive income (loss)	8,342	6,121
Total other comprehensive income (loss)	(134,499)	(191,924)
Accumulated other comprehensive (loss) income, ending balance	(1,837,713)	(1,703,214)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	(1,726,994)	(1,536,495)
Other comprehensive (loss) income
Other comprehensive income (loss) before reclassifications	(139,394)	(190,499)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive income (loss)	(139,394)	(190,499)
Accumulated other comprehensive (loss) income, ending balance	(1,866,388)	(1,726,994)
Net Unrealized Gains (Losses) On Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	(3,406)	(1,408)
Other comprehensive (loss) income
Other comprehensive income (loss) before reclassifications	0	(1,549)
Amounts reclassified from accumulated other comprehensive income (loss)	3,406	(449)
Total other comprehensive income (loss)	3,406	(1,998)
Accumulated other comprehensive (loss) income, ending balance	0	(3,406)
Net Minimum Pension Liability
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	27,186	26,613
Other comprehensive (loss) income
Other comprehensive income (loss) before reclassifications	(3,447)	(5,997)
Amounts reclassified from accumulated other comprehensive income (loss)	4,936	6,570
Total other comprehensive income (loss)	1,489	573
Accumulated other comprehensive (loss) income, ending balance	$ 28,675	$ 27,186