Rental And Lease Information (Future Minimum Lease Payment Table) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Rental and Lease Information [Abstract]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	$ 37
Capital Leases, Future Minimum Payments Due in Two Years	23
Capital Leases, Future Minimum Payments Due in Three Years	5
Capital Leases, Total minimum lease payments	65
Less amount representing interest	3
Total present value of minimum payments	62
Less current portion of such obligations	35
Long-term obligations with interest rates ranging from 1.74% to 8.46%	27
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	1.74%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	8.46%
Operating Leases, Future Minimum Payments Due, Next Twelve Months	3,138
Operating Leases, Future Minimum Payments, Due in Two Years	2,752
Operating Leases, Future Minimum Payments, Due in Three Years	2,051
Operating Leases, Future Minimum Payments, Due in Four Years	1,525
Operating Leases, Future Minimum Payments, Due Thereafter	2,998
Operating Leases, Total minimum lease payments	$ 12,464