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Income Taxes (Provision for Income Taxes) (Narrative) (Details) (State and Local Jurisdiction [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
State and Local Jurisdiction [Member]
 
Tax credit carryforwards available for state tax purposes $ 6.9
Net operating loss carryforwards available for state purposes $ 42.9
State operating loss carryforwards expiration years 2021 to 2027