Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	$ (1,896,135)	$ (1,637,656)	$ (1,762,387)	$ (1,650,050)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	175,972	(2,064)	35,803	9,258
Amounts reclassified from accumulated other comprehensive (loss) income	3,232	1,790	9,653	2,862
Total other comprehensive income (loss), net of taxes:	179,204	(274)	45,456	12,120
Accumulated other comprehensive (loss) income, ending balance	(1,716,931)	(1,637,930)	(1,716,931)	(1,637,930)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	(1,832,375)	(1,586,348)	(1,693,905)	(1,601,138)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	183,858	(932)	45,388	13,858
Amounts reclassified from accumulated other comprehensive (loss) income	0	0	0	0
Total other comprehensive income (loss), net of taxes:	183,858	(932)	45,388	13,858
Accumulated other comprehensive (loss) income, ending balance	(1,648,517)	(1,587,280)	(1,648,517)	(1,587,280)
Net Unrealized Gains On Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	4,028	4,760	3,410	6,210
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	(3,900)	(1,961)	(3,282)	(212)
Amounts reclassified from accumulated other comprehensive (loss) income	0	(346)	0	(3,545)
Total other comprehensive income (loss), net of taxes:	(3,900)	(2,307)	(3,282)	(3,757)
Accumulated other comprehensive (loss) income, ending balance	128	2,453	128	2,453
Net Minimum Pension Liability
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income, beginning balance	(67,788)	(56,068)	(71,892)	(55,122)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	(3,986)	829	(6,303)	(4,388)
Amounts reclassified from accumulated other comprehensive (loss) income	3,232	2,136	9,653	6,407
Total other comprehensive income (loss), net of taxes:	(754)	2,965	3,350	2,019
Accumulated other comprehensive (loss) income, ending balance	$ (68,542)	$ (53,103)	$ (68,542)	$ (53,103)