Rental And Lease Information (Assets Recorded Under Capital Leases Table) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Capital Leased Assets [Line Items]
Capital Leased Assets, Gross	$ 13,167	$ 13,170
Less accumulated amortization	12,556	11,019
Net capital lease assets	611	2,151
Land Improvements [Member]
Capital Leased Assets [Line Items]
Capital Leased Assets, Gross	6,373	6,372
Machinery and Equipment [Member]
Capital Leased Assets [Line Items]
Capital Leased Assets, Gross	6,395	6,399
Building [Member]
Capital Leased Assets [Line Items]
Capital Leased Assets, Gross	$ 399	$ 399