Accumulated Other Comprehensive Loss (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance			$ (11,708,956)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	$ 60,854	$ (98,882)	(496,786)	$ (122,385)
Amounts reclassified from accumulated other comprehensive (loss) income	2,268	1,533	5,942	4,542
Total other comprehensive income (loss), net of applicable taxes:	63,122	(97,349)	(490,844)	(117,843)
Accumulated other comprehensive (loss) income, ending balance	(20,133,781)		(20,133,781)
Accumulated Other Comprehensive loss, net
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	(2,257,180)	(1,531,784)	(1,703,214)	(1,511,290)
Other comprehensive (loss) income
Accumulated other comprehensive (loss) income, ending balance	(2,194,058)	(1,629,133)	(2,194,058)	(1,629,133)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	(2,288,570)	(1,567,473)	(1,726,994)	(1,536,495)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	59,527	(93,045)	(502,049)	(124,023)
Amounts reclassified from accumulated other comprehensive (loss) income	0	0	0	0
Total other comprehensive income (loss), net of applicable taxes:	59,527	(93,045)	(502,049)	(124,023)
Accumulated other comprehensive (loss) income, ending balance	(2,229,043)	(1,660,518)	(2,229,043)	(1,660,518)
Net Unrealized Gains (Losses) on Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	350	3,268	(3,406)	(1,408)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	(1,289)	1,511	1,224	6,536
Amounts reclassified from accumulated other comprehensive (loss) income	1,010	(82)	2,253	(431)
Total other comprehensive income (loss), net of applicable taxes:	(279)	1,429	3,477	6,105
Accumulated other comprehensive (loss) income, ending balance	71	4,697	71	4,697
Net Minimum Pension Liability
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	31,040	32,421	27,186	26,613
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	2,616	(7,348)	4,039	(4,898)
Amounts reclassified from accumulated other comprehensive (loss) income	1,258	1,615	3,689	4,973
Total other comprehensive income (loss), net of applicable taxes:	3,874	(5,733)	7,728	75
Accumulated other comprehensive (loss) income, ending balance	$ 34,914	$ 26,688	$ 34,914	$ 26,688