Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Statement Of Financial Position [Abstract]    
Allowance for doubtful accounts $ 2,273 $ 2,250
Common shares, par value $ 0.001 $ 0.001
Common shares, shares authorized 1,000,000,000 1,000,000,000
Common shares, shares outstanding 106,900,000 115,800,000