Other Liabilities (Summary Of Other Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Other Liabilities [Abstract]
Lease liability	$ 5,882	$ 5,855
Security deposit payable	174	174
Other	50	3
Other current liabilities	6,106	6,032
Foreign withholding taxes	6,547	6,480
Straight-line rent liability	9,076	8,893
Environmental reserve	1,656	1,656
Accrued pension	7,067	6,976
Interest rate swap	5,094	5,855
Acquired leases	1,911	2,078
Other payable	1,191	1,191
Other	611	630
Other liabilities	$ 33,153	$ 33,759