Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income at December 31,	$ (1,762,387)	$ (1,650,050)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	(130,799)	31,816
Amounts reclassified from accumulated other comprehensive (loss) income	3,190	2,160
Total other comprehensive (loss) income, net of taxes:	(127,609)	33,976
Accumulated other comprehensive (loss) income at March 31,	(1,889,996)	(1,616,074)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income at December 31,	(1,693,905)	(1,601,138)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	(126,286)	34,527
Amounts reclassified from accumulated other comprehensive (loss) income	0	0
Total other comprehensive (loss) income, net of taxes:	(126,286)	34,527
Accumulated other comprehensive (loss) income at March 31,	(1,820,191)	(1,566,611)
Net Unrealized Gains On Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income at December 31,	3,410	6,210
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	(1,815)	4,007
Amounts reclassified from accumulated other comprehensive (loss) income	0	0
Total other comprehensive (loss) income, net of taxes:	(1,815)	4,007
Accumulated other comprehensive (loss) income at March 31,	1,595	10,217
Net Minimum Pension Liability
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive (loss) income at December 31,	(71,892)	(55,122)
Other comprehensive (loss) income
Other comprehensive (loss) income before reclassifications	(2,698)	(6,718)
Amounts reclassified from accumulated other comprehensive (loss) income	3,190	2,160
Total other comprehensive (loss) income, net of taxes:	492	(4,558)
Accumulated other comprehensive (loss) income at March 31,	$ (71,400)	$ (59,680)