Compensation Programs (Schedule Of Dividend Equivalent Rights) (Detail) (USD $)	1 Months Ended	3 Months Ended	9 Months Ended
	Jul. 31, 2012	Sep. 30, 2012	Sep. 30, 2012
Share Based Compensation Arrangement By Dividend Equivalent Rights [Line Items]
Related compensation costs		$ 235,000	$ 718,000
2008 [Member]
Share Based Compensation Arrangement By Dividend Equivalent Rights [Line Items]
Month of Grant			July 2008
Total Grant			225,000
Related compensation costs		81,000	268,000
2009 [Member]
Share Based Compensation Arrangement By Dividend Equivalent Rights [Line Items]
Month of Grant			July 2009
Total Grant			225,000
Related compensation costs		81,000	268,000
2010 [Member]
Share Based Compensation Arrangement By Dividend Equivalent Rights [Line Items]
Month of Grant			July 2010
Total Grant			60,000
Related compensation costs		21,000	71,000
2011 [Member]
Share Based Compensation Arrangement By Dividend Equivalent Rights [Line Items]
Month of Grant			August 2011
Total Grant			72,000
Related compensation costs		26,000	85,000
2012 [Member]
Share Based Compensation Arrangement By Dividend Equivalent Rights [Line Items]
Month of Grant			July 2012
Total Grant	72,000		72,000
Related compensation costs		$ 26,000	$ 26,000