Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reserve For Uncertain Tax Positions) (Details)

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Income Taxes (Reserve For Uncertain Tax Positions) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Income Tax Disclosure [Abstract]    
Balance as of January 1 $ 13,552 $ 3,036
Increase based on tax positions during the current year 4,107 10,863
Increase based on tax positions during the prior year 451 0
Decreases based on tax positions taken in a prior period (9,925) (347)
Settlements (53) 0
Statute of limitation lapses (262) 0
Balance as of December 31 $ 7,870 $ 13,552