Accumulated Other Comprehensive Loss (Summary Of Changes In Accumulated Other Comprehensive Loss) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	$ (857,544)	$ (2,251,858)	$ (861,911)	$ (2,422,109)
Amounts reclassified from AOCL	4,367	170,252	8,734	340,503
Balance at end of period	(853,177)	(2,081,606)	(853,177)	(2,081,606)
Prior Service Cost [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(13,100)	(30,569)	(17,467)	(34,936)
Amounts reclassified from AOCL	4,367	4,368	8,734	8,735
Balance at end of period	(8,733)	(26,201)	(8,733)	(26,201)
Net Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of period	(844,444)	(2,221,289)	(844,444)	(2,387,173)
Amounts reclassified from AOCL		165,884		331,768
Balance at end of period	$ (844,444)	$ (2,055,405)	$ (844,444)	$ (2,055,405)