Disclosures About Fair Value of Assets and Liabilities ( Fair Value of Assets and Liabilities Reconciliation Of Significant Unobservable (Level Three) Inputs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Disclosures About Fair Value of Assets and Liabilities [Abstract]
Beginning balance	$ 2,464	$ 2,465	$ 2,475	$ 2,454
Total realized and unrealized gains and losses
Included in other comprehensive loss	536	(201)	525	(178)
Purchases, issuances and settlements				(12)
Ending balance	$ 3,000	$ 2,264	$ 3,000	$ 2,264