Accumulated Other Comprehensive Loss (Summary Of Changes In Accumulated Other Comprehensive Loss) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ (2,081,606)	$ (2,188,067)	$ (2,422,109)	$ (2,442,997)
Amounts reclassified from AOCL	170,251	127,465	510,754	382,395
Balance	(1,911,355)	(2,060,602)	(1,911,355)	(2,060,602)
Prior Service Cost [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(26,201)	(43,670)	(34,936)	(52,405)
Amounts reclassified from AOCL	4,367	4,367	13,102	13,102
Balance	(21,834)	(39,303)	(21,834)	(39,303)
Net Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(2,055,405)	(2,144,397)	(2,387,173)	(2,390,592)
Amounts reclassified from AOCL	165,884	123,098	497,652	369,293
Balance	$ (1,889,521)	$ (2,021,299)	$ (1,889,521)	$ (2,021,299)