Other Liabilities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Other Liabilities [Abstract]
Accrued pension costs	$ 4,553,000		$ 4,553,000		$ 4,289,000
Interest cost	87,000	99,000	264,000	289,000
Amortized prior service cost	$ 76,000	$ 82,000	$ 228,000	$ 246,000