Other Operating Costs (Benefit) (Activity For Office Space Reductions) (Details) (Office Space Reductions [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Office Space Reductions [Member]
Cost to operations during the year	$ 580
Beginning balance	1,675	4,428
Utilized during the year	(1,020)	(2,753)
Ending balance	$ 1,235	$ 1,675