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Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts receivable $ 3,227 $ 3,246
Common Stock, Par or Stated Value Per Share $ 0.00001 $ 0.00001
Common stock, shares authorized 500,000,000 500,000,000
Common stock, shares issued 63,244,000 61,377,000
Common stock, shares outstanding 63,244,000 61,377,000