Annual report pursuant to Section 13 and 15(d)

Nature of Business and Significant Accounting Policies (Long-lived assets) (Details)

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Nature of Business and Significant Accounting Policies (Long-lived assets) (Details) (USD $)
12 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
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Dec. 31, 2011
Mar. 31, 2012
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Sep. 30, 2011
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Dec. 31, 2011
Segment, Discontinued Operations [Member]
Dec. 31, 2010
Segment, Discontinued Operations [Member]
Dec. 31, 2009
Segment, Discontinued Operations [Member]
Dec. 31, 2012
Marketing Services [Member]
Dec. 31, 2012
Marketing Services [Member]
Impaired Long-Lived Assets Held and Used [Line Items]                  
Impairment of Intangible Assets, Finite-lived $ 18,400,000                
Impairment of Intangible Assets, Finite-lived 4,400,000                
Asset Impairment Charges $ 23,517,000 $ 0     $ 100,000 $ 600,000 $ 700,000 $ 100,000 $ 69,000
Net Rentable Area 9,000   6,700 47,000