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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Student receivables, allowance for doubtful accounts, current $ 35,250 $ 42,914
Student receivables, allowance for doubtful accounts, Non-current $ 11,982 $ 21,048
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 1,000,000 1,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 300,000,000 300,000,000
Common stock, shares issued 81,616,987 81,966,793
Common stock, shares outstanding 67,069,734 73,621,548
Treasury, Shares in treasury 14,547,253 8,345,245