v2.4.0.8
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Consolidated Balance Sheets [Abstract]    
Accounts receivable, allowance for doubtful accounts $ 6,073 $ 4,317
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 220,000,000 120,000,000
Common stock, shares issued 102,174,000 89,783,000
Treasury stock, shares 561,000 533,000